diff --git a/.github/ISSUE_TEMPLATE/chore-template.md b/.github/ISSUE_TEMPLATE/chore-template.md
index 4504ec9d..82c5756e 100644
--- a/.github/ISSUE_TEMPLATE/chore-template.md
+++ b/.github/ISSUE_TEMPLATE/chore-template.md
@@ -7,4 +7,7 @@ assignees: ''
 
 ---
 
+## ⚜️ To do
+
+- [ ]
 
diff --git a/.github/ISSUE_TEMPLATE/feat-template.md b/.github/ISSUE_TEMPLATE/feat-template.md
index 73c62764..99178fbd 100644
--- a/.github/ISSUE_TEMPLATE/feat-template.md
+++ b/.github/ISSUE_TEMPLATE/feat-template.md
@@ -7,6 +7,6 @@ assignees: ''
 
 ---
 
-## ⚜️To do
+## ⚜️ To do
 
-- [ ]
+- [ ] 
diff --git a/.github/ISSUE_TEMPLATE/fix-template.md b/.github/ISSUE_TEMPLATE/fix-template.md
index 7b3c3e34..9e0cfb3c 100644
--- a/.github/ISSUE_TEMPLATE/fix-template.md
+++ b/.github/ISSUE_TEMPLATE/fix-template.md
@@ -9,4 +9,7 @@ assignees: ''
 
 ## 🚨 오류 내용
 
+- 
 ## ✒️ 수정할 사항
+
+- 
diff --git a/.github/ISSUE_TEMPLATE/refactor-template.md b/.github/ISSUE_TEMPLATE/refactor-template.md
index fdd4b366..18511c81 100644
--- a/.github/ISSUE_TEMPLATE/refactor-template.md
+++ b/.github/ISSUE_TEMPLATE/refactor-template.md
@@ -7,6 +7,6 @@ assignees: ''
 
 ---
 
-## ⚜️To do
+## ⚜️ To do
 
-- [ ]
+- [ ] 
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index d2e57e1d..a57e8344 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,6 +1,11 @@
+### 관련 이슈
+- close 
+
 ### 📑 작업 상세 내용
 - 
+
 ### 💫 작업 요약
 - 
+
 ### 🔍 중점적으로 리뷰 할 부분
 - 
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..a8e0a9a3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,39 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+/src/main/resources/application.yml
+.DS_Store
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 00000000..affc2ab3
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,42 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '3.2.8'
+    id 'io.spring.dependency-management' version '1.1.6'
+}
+
+group = 'com.dnd'
+version = '0.0.1-SNAPSHOT'
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-data-jdbc'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-oauth2-client'
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    compileOnly 'org.projectlombok:lombok'
+    runtimeOnly 'com.mysql:mysql-connector-j'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.springframework.security:spring-security-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..e6441136
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..a4413138
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 00000000..b740cf13
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 00000000..25da30db
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 00000000..e1715ca5
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'GongmuIn'
diff --git a/src/main/java/com/dnd/gongmuin/GongmuInApplication.java b/src/main/java/com/dnd/gongmuin/GongmuInApplication.java
new file mode 100644
index 00000000..2544eb7a
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/GongmuInApplication.java
@@ -0,0 +1,13 @@
+package com.dnd.gongmuin;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GongmuInApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(GongmuInApplication.class, args);
+	}
+
+}
diff --git a/src/main/java/com/dnd/gongmuin/answer/domain/Answer.java b/src/main/java/com/dnd/gongmuin/answer/domain/Answer.java
new file mode 100644
index 00000000..e52bfee3
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/answer/domain/Answer.java
@@ -0,0 +1,58 @@
+package com.dnd.gongmuin.answer.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+import com.dnd.gongmuin.question_post.domain.QuestionPost;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Answer extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "answer_id", nullable = false)
+	private Long id;
+
+	@Column(name = "content", nullable = false)
+	private String content;
+
+	@Column(name = "is_chosen", nullable = false)
+	private Boolean isChosen;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "question_post_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private QuestionPost questionPost;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member member;
+
+	@Builder
+	public Answer(String content, QuestionPost questionPost, Member member) {
+		this.isChosen = false;
+		this.content = content;
+		this.questionPost = questionPost;
+		this.member = member;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/chat/domain/ChatMessage.java b/src/main/java/com/dnd/gongmuin/chat/domain/ChatMessage.java
new file mode 100644
index 00000000..faedf1a2
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/chat/domain/ChatMessage.java
@@ -0,0 +1,69 @@
+package com.dnd.gongmuin.chat.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.EnumType.*;
+import static jakarta.persistence.FetchType.*;
+import static jakarta.persistence.GenerationType.*;
+import static lombok.AccessLevel.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = PROTECTED)
+public class ChatMessage extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = IDENTITY)
+	@Column(name = "chat_message_id")
+	private Long id;
+
+	@Column(name = "content", nullable = false)
+	private String content;
+
+	@Column(name = "is_read", nullable = false)
+	private Boolean isRead;
+
+	@Column(name = "media_url", nullable = false)
+	private String mediaUrl;
+
+	@Enumerated(STRING)
+	@Column(name = "type", nullable = false)
+	private MessageType type;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member member;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "chat_room_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private ChatRoom chatRoom;
+
+	@Builder
+	public ChatMessage(String content, String mediaUrl, MessageType type, Member member,
+		ChatRoom chatRoom) {
+		this.isRead = false;
+		this.content = content;
+		this.mediaUrl = mediaUrl;
+		this.type = type;
+		this.member = member;
+		this.chatRoom = chatRoom;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/chat/domain/ChatRoom.java b/src/main/java/com/dnd/gongmuin/chat/domain/ChatRoom.java
new file mode 100644
index 00000000..11aaef9c
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/chat/domain/ChatRoom.java
@@ -0,0 +1,55 @@
+package com.dnd.gongmuin.chat.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+import com.dnd.gongmuin.question_post.domain.QuestionPost;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class ChatRoom extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "chat_room_id", nullable = false)
+	private Long id;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "questioner_id", nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member questioner;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "answerer_id", nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member answerer;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "question_post_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private QuestionPost questionPost;
+
+	@Builder
+	public ChatRoom(Member questioner, Member answerer, QuestionPost questionPost) {
+		this.questioner = questioner;
+		this.answerer = answerer;
+		this.questionPost = questionPost;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/chat/domain/MessageType.java b/src/main/java/com/dnd/gongmuin/chat/domain/MessageType.java
new file mode 100644
index 00000000..d59ba81a
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/chat/domain/MessageType.java
@@ -0,0 +1,28 @@
+package com.dnd.gongmuin.chat.domain;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum MessageType {
+
+	IMAGE("이미지"),
+	TEXT("텍스트"),
+	VIDEO("비디오");
+
+	private final String label;
+
+	public static MessageType of(String input) {
+		return Arrays.stream(values())
+			.filter(type -> type.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/entity/TimeBaseEntity.java b/src/main/java/com/dnd/gongmuin/common/entity/TimeBaseEntity.java
new file mode 100644
index 00000000..6d0821cb
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/entity/TimeBaseEntity.java
@@ -0,0 +1,23 @@
+package com.dnd.gongmuin.common.entity;
+
+import java.time.LocalDateTime;
+
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import jakarta.persistence.EntityListeners;
+import jakarta.persistence.MappedSuperclass;
+import lombok.Getter;
+
+@Getter
+@MappedSuperclass
+@EntityListeners(AuditingEntityListener.class)
+public abstract class TimeBaseEntity {
+
+	@CreatedDate
+	private LocalDateTime createdAt;
+
+	@LastModifiedDate
+	private LocalDateTime updatedAt;
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/CommonValidationError.java b/src/main/java/com/dnd/gongmuin/common/exception/CommonValidationError.java
new file mode 100644
index 00000000..7fa2f0f5
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/CommonValidationError.java
@@ -0,0 +1,27 @@
+package com.dnd.gongmuin.common.exception;
+
+import static lombok.AccessLevel.*;
+
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = PRIVATE)
+public final class CommonValidationError {
+
+	private static final String NOT_NULL_POSTFIX = " 는 Null 이 될 수 없습니다";
+	private static final String NOT_EMPTY_POSTFIX = " 는 Empty 가 될 수 없습니다";
+	private static final String RANGE_POSTFIX = "%s_%s는 %d 이상 %d 이하이어야 합니다.";
+
+	public static String getNotNullMessage(String object, String variable) {
+		return object + "_" + variable + NOT_NULL_POSTFIX;
+	}
+
+	public static String getNotEmptyMessage(String object, String variable) {
+		return object + "_" + variable + NOT_EMPTY_POSTFIX;
+	}
+
+	public static String getRangeMessage(String object, String variable, int min, int max) {
+		return String.format(
+			RANGE_POSTFIX, object, variable, min, max
+		);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/ErrorCode.java b/src/main/java/com/dnd/gongmuin/common/exception/ErrorCode.java
new file mode 100644
index 00000000..1462bb09
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/ErrorCode.java
@@ -0,0 +1,8 @@
+package com.dnd.gongmuin.common.exception;
+
+public interface ErrorCode {
+
+	String getMessage();
+
+	String getCode();
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/ErrorResponse.java b/src/main/java/com/dnd/gongmuin/common/exception/ErrorResponse.java
new file mode 100644
index 00000000..6dcfa188
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/ErrorResponse.java
@@ -0,0 +1,8 @@
+package com.dnd.gongmuin.common.exception;
+
+public record ErrorResponse(
+
+	String message,
+	String code
+) {
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/GlobalExceptionHandler.java b/src/main/java/com/dnd/gongmuin/common/exception/GlobalExceptionHandler.java
new file mode 100644
index 00000000..f4623330
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/GlobalExceptionHandler.java
@@ -0,0 +1,54 @@
+package com.dnd.gongmuin.common.exception;
+
+import java.util.List;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.validation.ObjectError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import com.dnd.gongmuin.common.exception.runtime.NotFoundException;
+import com.dnd.gongmuin.common.exception.runtime.ValidationException;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+	private static final String ARGUMENT_NOT_VALID_MESSAGE = "잘못된 입력 값 입니다";
+	private static final String ARGUMENT_NOT_VALID_ERROR_CODE = "G_001";
+
+	@ResponseStatus(HttpStatus.BAD_REQUEST)
+	@ExceptionHandler(MethodArgumentNotValidException.class)
+	public ErrorResponse handleMethodArgumentNotValidException(
+		MethodArgumentNotValidException e
+	) {
+		log.error("MethodArgumentNotValidException : ", e);
+
+		String message = ARGUMENT_NOT_VALID_MESSAGE;
+		List<ObjectError> allErrors = e.getBindingResult().getAllErrors();
+		if (!allErrors.isEmpty()) {
+			message = allErrors.get(0).getDefaultMessage();
+		}
+
+		return new ErrorResponse(message, ARGUMENT_NOT_VALID_ERROR_CODE);
+	}
+
+	@ResponseStatus(HttpStatus.BAD_REQUEST)
+	@ExceptionHandler(ValidationException.class)
+	public ErrorResponse handleValidationException(ValidationException e) {
+		log.error("ValidationException : ", e);
+		return new ErrorResponse(e.getMessage(), e.getCode());
+	}
+
+	@ResponseStatus(HttpStatus.BAD_REQUEST)
+	@ExceptionHandler(NotFoundException.class)
+	public ErrorResponse handleNotFoundException(NotFoundException e) {
+		log.error("NotFoundException : ", e);
+		return new ErrorResponse(e.getMessage(), e.getCode());
+	}
+}
+
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/runtime/NotFoundException.java b/src/main/java/com/dnd/gongmuin/common/exception/runtime/NotFoundException.java
new file mode 100644
index 00000000..b91a41e9
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/runtime/NotFoundException.java
@@ -0,0 +1,16 @@
+package com.dnd.gongmuin.common.exception.runtime;
+
+import com.dnd.gongmuin.common.exception.ErrorCode;
+
+import lombok.Getter;
+
+@Getter
+public class NotFoundException extends RuntimeException {
+
+	private final String code;
+
+	public NotFoundException(ErrorCode errorCode) {
+		super(errorCode.getMessage());
+		this.code = errorCode.getCode();
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/common/exception/runtime/ValidationException.java b/src/main/java/com/dnd/gongmuin/common/exception/runtime/ValidationException.java
new file mode 100644
index 00000000..8bc358c5
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/common/exception/runtime/ValidationException.java
@@ -0,0 +1,21 @@
+package com.dnd.gongmuin.common.exception.runtime;
+
+import com.dnd.gongmuin.common.exception.ErrorCode;
+
+import lombok.Getter;
+
+@Getter
+public class ValidationException extends RuntimeException {
+
+	private final String code;
+
+	public ValidationException(ErrorCode errorCode) {
+		super(errorCode.getMessage());
+		this.code = errorCode.getCode();
+	}
+
+	public ValidationException(String message) {
+		super(message);
+		this.code = "MSG_000";
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/credit/Credit.java b/src/main/java/com/dnd/gongmuin/credit/Credit.java
new file mode 100644
index 00000000..5269a198
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/credit/Credit.java
@@ -0,0 +1,54 @@
+package com.dnd.gongmuin.credit;
+
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Credit extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "credit_id", nullable = false)
+	private Long id;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "type", nullable = false)
+	private CreditType type;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "detail", nullable = false)
+	private CreditDetail detail;
+
+	@Column(name = "amount", nullable = false)
+	private int amount;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id", nullable = false) // 정합성 중요
+	private Member member;
+
+	@Builder
+	public Credit(CreditType type, CreditDetail detail, int amount, Member member) {
+		this.type = type;
+		this.detail = detail;
+		this.amount = amount;
+		this.member = member;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/credit/CreditDetail.java b/src/main/java/com/dnd/gongmuin/credit/CreditDetail.java
new file mode 100644
index 00000000..a34c24b6
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/credit/CreditDetail.java
@@ -0,0 +1,27 @@
+package com.dnd.gongmuin.credit;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum CreditDetail {
+
+	DEPOSIT("입금"),
+	WITHDRAWAL("출금");
+
+	private final String label;
+
+	public static CreditDetail of(String input) {
+		return Arrays.stream(values())
+			.filter(detail -> detail.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/credit/CreditType.java b/src/main/java/com/dnd/gongmuin/credit/CreditType.java
new file mode 100644
index 00000000..0d548f4b
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/credit/CreditType.java
@@ -0,0 +1,29 @@
+package com.dnd.gongmuin.credit;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum CreditType {
+
+	CHOOSE("채택하기"),
+	CHOSEN("채택받기"),
+	CHAT_REQUEST("채팅신청"),
+	CHAT_ACCEPT("채팅받기");
+
+	private final String label;
+
+	public static CreditType of(String input) {
+		return Arrays.stream(values())
+			.filter(type -> type.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/member/domain/JobCategory.java b/src/main/java/com/dnd/gongmuin/member/domain/JobCategory.java
new file mode 100644
index 00000000..d297ab51
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/member/domain/JobCategory.java
@@ -0,0 +1,26 @@
+package com.dnd.gongmuin.member.domain;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum JobCategory {
+
+	GAS("가스"); // TODO: 7/20/24 필드 추가
+
+	private final String label;
+
+	public static JobCategory of(String input) {
+		return Arrays.stream(values())
+			.filter(category -> category.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/member/domain/JobGroup.java b/src/main/java/com/dnd/gongmuin/member/domain/JobGroup.java
new file mode 100644
index 00000000..ed527931
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/member/domain/JobGroup.java
@@ -0,0 +1,26 @@
+package com.dnd.gongmuin.member.domain;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum JobGroup {
+
+	ENGINEERING("공업"); // TODO: 7/20/24 필드 추가
+
+	private final String label;
+
+	public static JobGroup of(String input) {
+		return Arrays.stream(values())
+			.filter(group -> group.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/member/domain/Member.java b/src/main/java/com/dnd/gongmuin/member/domain/Member.java
new file mode 100644
index 00000000..ac19f582
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/member/domain/Member.java
@@ -0,0 +1,62 @@
+package com.dnd.gongmuin.member.domain;
+
+import static jakarta.persistence.EnumType.*;
+import static jakarta.persistence.GenerationType.*;
+import static lombok.AccessLevel.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = PROTECTED)
+public class Member extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = IDENTITY)
+	@Column(name = "member_id")
+	private Long id;
+
+	@Column(name = "nickname", nullable = false)
+	private String nickname;
+
+	@Column(name = "social_name", nullable = false)
+	private String socialName;
+
+	@Enumerated(STRING)
+	@Column(name = "job_group", nullable = false)
+	private JobGroup jobGroup;
+
+	@Enumerated(STRING)
+	@Column(name = "job_category", nullable = false)
+	private JobCategory jobCategory;
+
+	@Column(name = "social_email", nullable = false)
+	private String socialEmail;
+
+	@Column(name = "official_email", nullable = false)
+	private String officialEmail;
+
+	@Column(name = "credit", nullable = false)
+	private int credit;
+
+	@Builder
+	public Member(String nickname, String socialName, JobGroup jobGroup, JobCategory jobCategory, String socialEmail,
+		String officialEmail, int credit) {
+		this.nickname = nickname;
+		this.socialName = socialName;
+		this.jobGroup = jobGroup;
+		this.jobCategory = jobCategory;
+		this.socialEmail = socialEmail;
+		this.officialEmail = officialEmail;
+		this.credit = credit;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/notification/domain/Notification.java b/src/main/java/com/dnd/gongmuin/notification/domain/Notification.java
new file mode 100644
index 00000000..c1bfb21b
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/notification/domain/Notification.java
@@ -0,0 +1,57 @@
+package com.dnd.gongmuin.notification.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Notification extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "notification_id", nullable = false)
+	private Long id;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "type", nullable = false)
+	private NotificationType type;
+
+	@Column(name = "is_read", nullable = false)
+	private Boolean isRead;
+
+	@Column(name = "target_url")
+	private String targetUrl;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member member;
+
+	@Builder
+	public Notification(NotificationType type, Boolean isRead, String targetUrl, Member member) {
+		this.type = type;
+		this.isRead = isRead;
+		this.targetUrl = targetUrl;
+		this.member = member;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/notification/domain/NotificationType.java b/src/main/java/com/dnd/gongmuin/notification/domain/NotificationType.java
new file mode 100644
index 00000000..63931d16
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/notification/domain/NotificationType.java
@@ -0,0 +1,28 @@
+package com.dnd.gongmuin.notification.domain;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum NotificationType {
+
+	ANSWER("댓글"),
+	CHOSEN("채택"),
+	CHAT("채팅");
+
+	private final String label;
+
+	public static NotificationType of(String input) {
+		return Arrays.stream(values())
+			.filter(type -> type.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/post_interaction/domain/InteractionType.java b/src/main/java/com/dnd/gongmuin/post_interaction/domain/InteractionType.java
new file mode 100644
index 00000000..f24cf10e
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/post_interaction/domain/InteractionType.java
@@ -0,0 +1,27 @@
+package com.dnd.gongmuin.post_interaction.domain;
+
+import java.util.Arrays;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum InteractionType {
+
+	SAVED("저장"),
+	RECOMMEND("추천");
+
+	private final String label;
+
+	public static InteractionType of(String input) {
+		return Arrays.stream(values())
+			.filter(type -> type.isEqual(input))
+			.findAny()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+
+	private boolean isEqual(String input) {
+		return input.equals(this.label);
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteraction.java b/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteraction.java
new file mode 100644
index 00000000..ac2323f1
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteraction.java
@@ -0,0 +1,61 @@
+package com.dnd.gongmuin.post_interaction.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+import com.dnd.gongmuin.question_post.domain.QuestionPost;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class PostInteraction extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "post_interaction_id", nullable = false)
+	private Long id;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "type", nullable = false)
+	private InteractionType type;
+
+	@Column(name = "is_interacted", nullable = false)
+	private Boolean isInteracted;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member member;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "question_post_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private QuestionPost questionPost;
+
+	@Builder
+	public PostInteraction(InteractionType type, Member member, QuestionPost questionPost) {
+		this.isInteracted = true;
+		this.type = type;
+		this.member = member;
+		this.questionPost = questionPost;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteractionCount.java b/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteractionCount.java
new file mode 100644
index 00000000..78f48955
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/post_interaction/domain/PostInteractionCount.java
@@ -0,0 +1,52 @@
+package com.dnd.gongmuin.post_interaction.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.question_post.domain.QuestionPost;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class PostInteractionCount extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "post_interaction_count_id", nullable = false)
+	private Long id;
+
+	@Column(name = "total_count", nullable = false)
+	private int totalCount;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "type")
+	private InteractionType type;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "question_post_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private QuestionPost questionPost;
+
+	@Builder
+	public PostInteractionCount(InteractionType type, QuestionPost questionPost) {
+		this.type = type;
+		this.questionPost = questionPost;
+	}
+}
diff --git a/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionCategory.java b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionCategory.java
new file mode 100644
index 00000000..64e4b51c
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionCategory.java
@@ -0,0 +1,15 @@
+package com.dnd.gongmuin.question_post.domain;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum QuestionCategory {
+
+	COMMON("전체"),
+	TASK("업무"),
+	JOB_CATEGORY("직렬");
+
+	private final String label;
+}
diff --git a/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPost.java b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPost.java
new file mode 100644
index 00000000..6c516924
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPost.java
@@ -0,0 +1,75 @@
+package com.dnd.gongmuin.question_post.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+import com.dnd.gongmuin.member.domain.Member;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class QuestionPost extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "question_post_id", nullable = false)
+	private Long id;
+
+	@Column(name = "title", nullable = false)
+	private String title;
+
+	@Column(name = "content", nullable = false)
+	private String content;
+
+	@Column(name = "reward", nullable = false)
+	private int reward;
+
+	@Enumerated(EnumType.STRING)
+	@Column(name = "category", nullable = false)
+	QuestionCategory category;
+
+	@Column(name = "is_chosen", nullable = false)
+	private Boolean isChosen;
+
+	@OneToMany(mappedBy = "questionPost", cascade = CascadeType.ALL)
+	private List<QuestionPostImage> images = new ArrayList<>();
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "member_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private Member member;
+
+	@Builder
+	public QuestionPost(String title, String content, int reward, QuestionCategory category,
+		List<QuestionPostImage> images, Member member) {
+		this.isChosen = false;
+		this.title = title;
+		this.content = content;
+		this.reward = reward;
+		this.category = category;
+		this.images = images;
+		this.member = member;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPostImage.java b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPostImage.java
new file mode 100644
index 00000000..68749239
--- /dev/null
+++ b/src/main/java/com/dnd/gongmuin/question_post/domain/QuestionPostImage.java
@@ -0,0 +1,45 @@
+package com.dnd.gongmuin.question_post.domain;
+
+import static jakarta.persistence.ConstraintMode.*;
+import static jakarta.persistence.FetchType.*;
+
+import com.dnd.gongmuin.common.entity.TimeBaseEntity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class QuestionPostImage extends TimeBaseEntity {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "question_post_image_id", nullable = false)
+	private Long id;
+
+	@Column(name = "image_url")
+	private String imageUrl;
+
+	@ManyToOne(fetch = LAZY)
+	@JoinColumn(name = "question_post_id",
+		nullable = false,
+		foreignKey = @ForeignKey(NO_CONSTRAINT))
+	private QuestionPost questionPost;
+
+	@Builder
+	public QuestionPostImage(String imageUrl, QuestionPost questionPost) {
+		this.imageUrl = imageUrl;
+		this.questionPost = questionPost;
+	}
+}
diff --git a/src/test/java/com/dnd/gongmuin/GongMuInTestApplication.java b/src/test/java/com/dnd/gongmuin/GongMuInTestApplication.java
new file mode 100644
index 00000000..986f7d88
--- /dev/null
+++ b/src/test/java/com/dnd/gongmuin/GongMuInTestApplication.java
@@ -0,0 +1,11 @@
+package com.dnd.gongmuin;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GongMuInTestApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(GongMuInTestApplication.class, args);
+	}
+}