diff --git a/demo/tree.html b/demo/tree.html
index 45f4b1c..0232a93 100644
--- a/demo/tree.html
+++ b/demo/tree.html
@@ -45,7 +45,7 @@
               <span class="ul-tree-item-title">PHP</span>
             </div>
             <div class="ul-tree-item-children">
-              <div class="ul-tree-item">
+              <div class="ul-tree-item disabled">
                 <div class="ul-tree-item-info">
                   <i class="ul-tree-item-icon layui-icon layui-icon-triangle-d"></i>
                   <span class="ul-tree-item-title">扩展</span>
diff --git a/public/cdn/layui-ul.css b/public/cdn/layui-ul.css
index a9157d1..70bc921 100644
--- a/public/cdn/layui-ul.css
+++ b/public/cdn/layui-ul.css
@@ -531,6 +531,11 @@
   cursor          : pointer;
 }
 
+.ul-tree-item.disabled , .ul-tree-item.disabled .ul-tree-item{
+  background-color: #eee;
+  cursor: not-allowed;
+}
+
 .ul-tree-item-info {
   border-left: 3px solid transparent;
   padding    : 8px 0;