diff --git a/application/admin/controller/Ajax.php b/application/admin/controller/Ajax.php
index 0a7a3b46..6676e801 100644
--- a/application/admin/controller/Ajax.php
+++ b/application/admin/controller/Ajax.php
@@ -146,8 +146,8 @@ class Ajax extends Backend
         //操作的数据表
         $table = $this->request->post("table");
         //排序的方式
-        $orderway = $this->request->post("orderway");
-        $orderway = strtolower($orderway) == 'asc' ? 'ASC' : 'DESC';
+        $orderway = $this->request->post("orderway", "", "strtolower");
+        $orderway = $orderway == 'asc' ? 'ASC' : 'DESC';
         $sour = $weighdata = [];
         $ids = explode(',', $ids);
         $prikey = 'id';