diff --git a/cmdb-api/api/lib/cmdb/ci.py b/cmdb-api/api/lib/cmdb/ci.py
index 88530d0..ad84126 100644
--- a/cmdb-api/api/lib/cmdb/ci.py
+++ b/cmdb-api/api/lib/cmdb/ci.py
@@ -187,8 +187,12 @@ class CIManager(object):
                 return abort(404, 'CI <{0}> does not exist'.format(unique_value))
             ci = CI.create(type_id=ci_type.id)
 
+        ci_type_attrs_name = [attr["name"] for attr in CITypeAttributeManager().get_attributes_by_type_id(ci_type.id)]
         value_manager = AttributeValueManager()
         for p, v in ci_dict.items():
+            if p not in ci_type_attrs_name:
+                current_app.logger.warning('ci_type: {0} not has attribute {1}, please check!'.format(ci_type_name, p))
+                continue
             try:
                 value_manager.create_or_update_attr_value(p, v, ci, _no_attribute_policy)
             except BadRequest as e:
diff --git a/cmdb-api/api/lib/cmdb/value.py b/cmdb-api/api/lib/cmdb/value.py
index 2b53a22..10c54a0 100644
--- a/cmdb-api/api/lib/cmdb/value.py
+++ b/cmdb-api/api/lib/cmdb/value.py
@@ -160,12 +160,13 @@ class AttributeValueManager(object):
 
                 self._write_change(ci.id, attr.id, OperateType.ADD, None, value)
             else:
-                if not value and attr.value_type != ValueTypeEnum.TEXT:
-                    existed_attr.delete()
-                else:
-                    existed_attr.update(value=value)
+                if existed_value != value:
+                    if value != 0 and not value and attr.value_type != ValueTypeEnum.TEXT:
+                        existed_attr.delete()
+                    else:
+                        existed_attr.update(value=value)
 
-                self._write_change(ci.id, attr.id, OperateType.UPDATE, existed_value, value)
+                    self._write_change(ci.id, attr.id, OperateType.UPDATE, existed_value, value)
 
     @staticmethod
     def delete_attr_value(attr_id, ci_id):