diff --git a/Application/Admin/View/Public/base.html b/Application/Admin/View/Public/base.html
index 3e1e3ff9b..d46f412df 100644
--- a/Application/Admin/View/Public/base.html
+++ b/Application/Admin/View/Public/base.html
@@ -19,6 +19,11 @@
     <script type="text/javascript" src="__JS__/jquery.mousewheel.js"></script>
     <!--<![endif]-->
     <block name="style"></block>
+    <style>
+        .select2-dropdown {
+            z-index: 1;
+        }
+    </style>
 </head>
 <body>
     <!-- 头部 -->
