diff --git a/mybatis-generator/src/main/java/org/apache/iotdb/mybatis/plugin/generator/resolver/IoTDBJavaTypeResolver.java b/mybatis-generator/src/main/java/org/apache/iotdb/mybatis/plugin/generator/resolver/IoTDBJavaTypeResolver.java
index 3aefc81c..646d7221 100644
--- a/mybatis-generator/src/main/java/org/apache/iotdb/mybatis/plugin/generator/resolver/IoTDBJavaTypeResolver.java
+++ b/mybatis-generator/src/main/java/org/apache/iotdb/mybatis/plugin/generator/resolver/IoTDBJavaTypeResolver.java
@@ -31,6 +31,9 @@ public class IoTDBJavaTypeResolver extends JavaTypeResolverDefaultImpl {
   public IoTDBJavaTypeResolver() {
     super();
     typeExtMap = new HashMap<>();
+    super.typeMap.put(
+        Types.TIMESTAMP,
+        new JdbcTypeInformation("TIMESTAMP", new FullyQualifiedJavaType(Long.class.getName())));
     initTypeSet();
   }