diff --git a/src/main/java/com/ql/util/express/parse/ExpressParse.java b/src/main/java/com/ql/util/express/parse/ExpressParse.java
index 22bc8d724..daf9fa3be 100644
--- a/src/main/java/com/ql/util/express/parse/ExpressParse.java
+++ b/src/main/java/com/ql/util/express/parse/ExpressParse.java
@@ -172,7 +172,12 @@ public List<ExpressNode> transferWord2ExpressNode(ExpressPackage rootExpressPack
                     tempWord = tempWord.substring(0, tempWord.length() - 1);
                     objectValue = Long.valueOf(tempWord);
                 } else {
-                    long tempLong = Long.parseLong(tempWord);
+                    long tempLong;
+                    if (tempWord.indexOf("e") >=0 || tempWord.indexOf("E") >=0) {
+                        tempLong = Double.valueOf(tempWord).longValue();
+                    } else {
+                        tempLong = Long.parseLong(tempWord);
+                    }
                     if (tempLong <= Integer.MAX_VALUE && tempLong >= Integer.MIN_VALUE) {
                         tempType = nodeTypeManager.findNodeType("CONST_INTEGER");
                         objectValue = (int)tempLong;
diff --git a/src/test/java/com/ql/util/express/bugfix/ScientificNumberTest.java b/src/test/java/com/ql/util/express/bugfix/ScientificNumberTest.java
new file mode 100644
index 000000000..587432f10
--- /dev/null
+++ b/src/test/java/com/ql/util/express/bugfix/ScientificNumberTest.java
@@ -0,0 +1,34 @@
+package com.ql.util.express.bugfix;
+
+import com.ql.util.express.DefaultContext;
+import com.ql.util.express.ExpressRunner;
+import com.ql.util.express.IExpressContext;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * created by jiwenxing on 2022/5/12
+ */
+public class ScientificNumberTest {
+
+    static List<String> express = new ArrayList<>();
+    static {
+        express.add("2e2==200");
+        express.add("2E2==200");
+        express.add("2.0e2==200");
+        express.add("2.0E2==200");
+    }
+
+    @Test
+    public void testFunction() throws Exception {
+        ExpressRunner runner = new ExpressRunner();
+        IExpressContext<String, Object> context = new DefaultContext<>();
+        for (String exp: express) {
+            Object result = runner.execute(exp, context, null, false, false);
+            System.out.println(exp + ": " + result);
+            assert ((Boolean)result);
+        }
+    }
+}