diff --git a/app/admin/controller/system/Admin.php b/app/admin/controller/system/Admin.php
index 5727380..1936c86 100644
--- a/app/admin/controller/system/Admin.php
+++ b/app/admin/controller/system/Admin.php
@@ -138,7 +138,7 @@ class Admin extends AdminController
             }
             $save ? $this->success('保存成功') : $this->error('保存失败');
         }
-        $row->auth_ids = explode(',', $row->auth_ids ?: []);
+        $row->auth_ids = explode(',', $row->auth_ids ?: '');
         $this->assign('row', $row);
         return $this->fetch();
     }