diff --git a/apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/v1/controller/ItemController.java b/apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/v1/controller/ItemController.java
index 8e8698018230802e80209a30eee8db4196c2ed40..0384478371ac536a7b2b2b7e145ca8d9914703b3 100644
--- a/apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/v1/controller/ItemController.java
+++ b/apollo-portal/src/main/java/com/ctrip/framework/apollo/openapi/v1/controller/ItemController.java
@@ -52,6 +52,8 @@ public class ItemController {
     toCreate.setLineNum(0);
     toCreate.setId(0);
     toCreate.setDataChangeLastModifiedBy(toCreate.getDataChangeCreatedBy());
+    toCreate.setDataChangeLastModifiedTime(null);
+    toCreate.setDataChangeCreatedTime(null);
 
     ItemDTO createdItem = itemService.createItem(appId, Env.fromString(env),
         clusterName, namespaceName, toCreate);
diff --git a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/ItemController.java b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/ItemController.java
index 66680e1054ea0a3c5e3bbcda39049410a731996b..e5159afa593d8767b178be5962bff334be1bc146 100644
--- a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/ItemController.java
+++ b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/ItemController.java
@@ -58,6 +58,15 @@ public class ItemController {
                             @RequestBody ItemDTO item) {
     checkModel(isValidItem(item));
 
+    //protect
+    item.setLineNum(0);
+    item.setId(0);
+    String userId = userInfoHolder.getUser().getUserId();
+    item.setDataChangeCreatedBy(userId);
+    item.setDataChangeLastModifiedBy(userId);
+    item.setDataChangeCreatedTime(null);
+    item.setDataChangeLastModifiedTime(null);
+
     return configService.createItem(appId, Env.valueOf(env), clusterName, namespaceName, item);
   }
 
diff --git a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/ItemService.java b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/ItemService.java
index 803fb45e6baa3c593c1122cc8465f7bb5d82593e..7800e40c8e2fd874f220979d77ca5aa70fef553d 100644
--- a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/ItemService.java
+++ b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/service/ItemService.java
@@ -91,12 +91,6 @@ public class ItemService {
     }
     item.setNamespaceId(namespace.getId());
 
-    if (StringUtils.isEmpty(item.getDataChangeCreatedBy())) {
-      String username = userInfoHolder.getUser().getUserId();
-      item.setDataChangeCreatedBy(username);
-      item.setDataChangeLastModifiedBy(username);
-    }
-
     ItemDTO itemDTO = itemAPI.createItem(appId, env, clusterName, namespaceName, item);
     Cat.logEvent(CatEventType.MODIFY_NAMESPACE, String.format("%s+%s+%s+%s", appId, env, clusterName, namespaceName));
     return itemDTO;