diff --git a/demo/js/base/tree/demo.sync_tree.js b/demo/js/base/tree/demo.sync_tree.js
index 37f8e57f6..326d508b3 100644
--- a/demo/js/base/tree/demo.sync_tree.js
+++ b/demo/js/base/tree/demo.sync_tree.js
@@ -3,7 +3,48 @@ Demo.Func = BI.inherit(BI.Widget, {
         baseCls: "demo-func"
     },
 
+    mounted: function () {
+        this.syncTree.stroke();
+    },
+
     render: function () {
+        var self = this;
+        return {
+            type: "bi.vtape",
+            items: [{
+                type: "bi.label",
+                height: 50,
+                text: "可以异步获取数据的树"
+            }, {
+                type: "bi.async_tree",
+                ref: function (_ref) {
+                    self.syncTree = _ref;
+                },
+                paras: {
+                    selectedValues: {"_0": {}, "_5": {"_5_0": {}}}
+                },
+                itemsCreator: function (op, callback) {
+                    callback({
+                        items: [{
+                            id: (op.id || "") + "1",
+                            pId: op.id,
+                            text: 1,
+                            isParent: true
+                        }, {
+                            id: (op.id || "") + "2",
+                            pId: op.id,
+                            text: 2
+                        }, {
+                            id: (op.id || "") + "3",
+                            pId: op.id,
+                            text: 3
+                        }],
+                        hasNext: BI.isNull(op.id)
+                    });
+                }
+            }]
+        };
+
     }
 });
 BI.shortcut("demo.sync_tree", Demo.Func);
\ No newline at end of file
diff --git a/dist/demo.js b/dist/demo.js
index 2f53afc2c..0208fe445 100644
--- a/dist/demo.js
+++ b/dist/demo.js
@@ -1609,7 +1609,48 @@ BI.shortcut("demo.part_tree", Demo.Func);Demo.Func = BI.inherit(BI.Widget, {
         baseCls: "demo-func"
     },
 
+    mounted: function () {
+        this.syncTree.stroke();
+    },
+
     render: function () {
+        var self = this;
+        return {
+            type: "bi.vtape",
+            items: [{
+                type: "bi.label",
+                height: 50,
+                text: "可以异步获取数据的树"
+            }, {
+                type: "bi.async_tree",
+                ref: function (_ref) {
+                    self.syncTree = _ref;
+                },
+                paras: {
+                    selectedValues: {"_0": {}, "_5": {"_5_0": {}}}
+                },
+                itemsCreator: function (op, callback) {
+                    callback({
+                        items: [{
+                            id: (op.id || "") + "1",
+                            pId: op.id,
+                            text: 1,
+                            isParent: true
+                        }, {
+                            id: (op.id || "") + "2",
+                            pId: op.id,
+                            text: 2
+                        }, {
+                            id: (op.id || "") + "3",
+                            pId: op.id,
+                            text: 3
+                        }],
+                        hasNext: BI.isNull(op.id)
+                    });
+                }
+            }]
+        };
+
     }
 });
 BI.shortcut("demo.sync_tree", Demo.Func);Demo.Func = BI.inherit(BI.Widget, {