diff --git a/app/Services/UserService.php b/app/Services/UserService.php
index ce0c906..8759d5a 100644
--- a/app/Services/UserService.php
+++ b/app/Services/UserService.php
@@ -436,8 +436,10 @@ class UserService extends BaseService
             $data['consignee_tel_mask'] = Mask::maskPhoneStr($request_params['consignee_tel']);
         }
 
-        if ($user_ship_address['tag'] != $request_params['tag']) {
-            $data['tag'] = $request_params['tag'];
+        if (isset($request_params['tag'])){
+            if ($user_ship_address['tag'] != $request_params['tag']) {
+                $data['tag'] = $request_params['tag'];
+            }
         }
 
         if ($user_ship_address['is_default'] != $request_params['is_default']) {