diff --git a/app/controller/admin/system/merchant/MerchantCategory.php b/app/controller/admin/system/merchant/MerchantCategory.php
index 43e974e2..1d22c468 100644
--- a/app/controller/admin/system/merchant/MerchantCategory.php
+++ b/app/controller/admin/system/merchant/MerchantCategory.php
@@ -154,7 +154,7 @@ class MerchantCategory extends BaseController
      */
     public function checkParams(MerchantCategoryValidate $validate)
     {
-        $data = $this->request->params(['category_name', ['commission_rate', 0], 'background', 'description']);
+        $data = $this->request->params(['category_name', ['commission_rate', 0], 'background', 'cover', 'description']);
         $validate->check($data);
         return $data;
     }