diff --git a/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java b/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
index c826f44..deed485 100644
--- a/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
+++ b/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
@@ -75,4 +75,9 @@ public void updateMilestone(Integer milestoneId, String title, LocalDate dueDate
                      "WHERE id = :milestoneId";
         namedParameterJdbcTemplate.update(sql, namedParameters);
     }
+
+    public void deleteMilestone(Integer milestoneId) {
+        String sql = "DELETE FROM milestone WHERE id = ?";
+        jdbcTemplate.update(sql, milestoneId);
+    }
 }