diff --git a/src/main/java/com/cisd/tms/infrastructure/persistence/mybatis/CommonMetaObjectHandler.java b/src/main/java/com/cisd/tms/infrastructure/persistence/mybatis/CommonMetaObjectHandler.java
index 00c57c4..bb9f3e9 100644
--- a/src/main/java/com/cisd/tms/infrastructure/persistence/mybatis/CommonMetaObjectHandler.java
+++ b/src/main/java/com/cisd/tms/infrastructure/persistence/mybatis/CommonMetaObjectHandler.java
@@ -35,5 +35,11 @@ public class CommonMetaObjectHandler implements MetaObjectHandler {
         if ( metaObject.hasSetter("updateTime") ) {
             this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
         }
+        // 插入时，直接基于当前实体对象计算 MAC
+        if (metaObject.hasSetter("mac")) {
+            Object entity = metaObject.getOriginalObject();
+            String mac = Sm3MacCalculator.calculateForEntity(entity);
+            this.strictInsertFill(metaObject, "mac", String.class, mac);
+        }
     }
 }