diff --git a/Application/Sdk/Controller/UserController.class.php b/Application/Sdk/Controller/UserController.class.php
index 620d22a7..eea7bfcb 100644
--- a/Application/Sdk/Controller/UserController.class.php
+++ b/Application/Sdk/Controller/UserController.class.php
@@ -20,7 +20,7 @@ class UserController extends BaseController
 
     public function isBan($ip, $deviceNum)
     {
-        $ban = M('device_bans','tab_')->select(['id'])->where(['tag' => ['in', [$ip, $deviceNum]]])->limit(1)->find();
+        $ban = M('device_bans','tab_')->field(['id'])->where(['tag' => ['in', [$ip, $deviceNum]]])->limit(1)->find();
         if (empty($ban)) {
             return false;
         }