diff --git a/src/case/ztree/1.asynctree.js b/src/case/ztree/1.asynctree.js
index dde174b5b..ef44f50d3 100644
--- a/src/case/ztree/1.asynctree.js
+++ b/src/case/ztree/1.asynctree.js
@@ -1,6 +1,6 @@
 /**
  * guy
- * 同步树
+ * 异步树
  * @class BI.AsyncTree
  * @extends BI.TreeView
  */
@@ -194,7 +194,8 @@ BI.AsyncTree = BI.inherit(BI.TreeView, {
 
         // 展开节点会将halfCheck置为false以开启自动计算半选, 所以第一次展开节点的时候需要在置为false之前获取配置
         var checkState = treeNode.getCheckStatus();
-        if (!treeNode.children) {
+        if (!treeNode.children && !treeNode.requested) {
+            treeNode.requested = true;
             setTimeout(function () {
                 getNodes({
                     times: 1,