diff --git a/css/information-system3.css b/css/information-system3.css
index 86cca4ae..49d38874 100644
--- a/css/information-system3.css
+++ b/css/information-system3.css
@@ -115,7 +115,7 @@
   .ke-edit-iframe{width: 101.5% !important;padding-left:10px !important;}
   .edit_tool a i{padding-left: 5px;}
   #treeDemo:hover{overflow-y:scroll !important;}
-  .ztree li ul{overflow: hidden;}
+  .ztree li ul{overflow: auto;}
   #tecate-errors{height: 90px !important;}
   .recommend_info_popover{top: 69px !important;left: -102px !important;max-width:500px;min-height:300px;margin-bottom:50px;}
   #recommend_list{max-height: 315px;overflow-y: auto;overflow-x: hidden;margin-right: -16px;float: right;}