diff --git a/changelog.md b/changelog.md
index 10554c938..7f8f21ba8 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,6 @@
 # 更新日志
 2.0(2020-04)
+- 复选下拉树展开节点提供分页加载和滚动加载两种方式
 - 修复了复选下拉列表初始化的时候发送执行两次itemsCreator的问题
 - 修复了virtual_list重新populate无效的问题
 - 复选下拉框新增值的时候外抛事件
diff --git a/src/base/tree/ztree/asynctree.js b/src/base/tree/ztree/asynctree.js
index 569ada929..a26affd56 100644
--- a/src/base/tree/ztree/asynctree.js
+++ b/src/base/tree/ztree/asynctree.js
@@ -11,9 +11,7 @@ BI.AsyncTree = BI.inherit(BI.TreeView, {
     _init: function () {
         BI.AsyncTree.superclass._init.apply(this, arguments);
         var self = this;
-        this.service = new BI.TreeRenderService({
-            id: this.id,
-            container: this.element,
+        this.service = new BI.TreeRenderPageService({
             subNodeListGetter: function (tId) {
                 // 获取待检测的子节点列表, ztree并没有获取节点列表dom的API, 此处使用BI.$获取
                 return BI.$("#" + self.id + " #" + tId + "_ul");
@@ -156,13 +154,12 @@ BI.AsyncTree = BI.inherit(BI.TreeView, {
         };
 
         function callback(nodes, hasNext) {
+            self.nodes.addNodes(treeNode, nodes);
             if (hasNext) {
                 self.service.pushNodeList(treeNode.tId, getNodes);
             } else {
                 self.service.removeNodeList(treeNode.tId);
             }
-            // console.log("add nodes");
-            self.nodes.addNodes(treeNode, nodes);
 
         }
 
diff --git a/src/base/tree/ztree/treerender.service.js b/src/base/tree/ztree/treerender.scroll.service.js
similarity index 97%
rename from src/base/tree/ztree/treerender.service.js
rename to src/base/tree/ztree/treerender.scroll.service.js
index 37ef035b9..a2d019c46 100644
--- a/src/base/tree/ztree/treerender.service.js
+++ b/src/base/tree/ztree/treerender.scroll.service.js
@@ -2,10 +2,11 @@
  * @author windy
  * @version 2.0
  * Created by windy on 2020/1/8
+ * 提供节点滚动加载方式
  */
 
 !(function () {
-    BI.TreeRenderService = BI.inherit(BI.OB, {
+    BI.TreeRenderScrollService = BI.inherit(BI.OB, {
         _init: function () {
             this.nodeLists = {};
 
diff --git a/src/base/tree/ztree/treetrender.page.service.js b/src/base/tree/ztree/treetrender.page.service.js
new file mode 100644
index 000000000..628c7ba44
--- /dev/null
+++ b/src/base/tree/ztree/treetrender.page.service.js
@@ -0,0 +1,76 @@
+/**
+ * @author windy
+ * @version 2.0
+ * Created by windy on 2020/1/8
+ * 提供节点分页加载方式
+ */
+
+!(function () {
+    BI.TreeRenderPageService = BI.inherit(BI.OB, {
+        _init: function () {
+            this.nodeLists = {};
+        },
+
+        _getLoadingBar: function(tId) {
+            var self = this;
+            var tip = BI.createWidget({
+                type: "bi.loading_bar",
+                height: 25,
+                handler: function () {
+                    self.refreshNodes(tId);
+                }
+            });
+            tip.setLoaded();
+            return tip;
+        },
+
+        pushNodeList: function (tId, populate) {
+            var self = this, o = this.options;
+            var tip = this._getLoadingBar(tId);
+            if (!BI.has(this.nodeLists, tId)) {
+                this.nodeLists[tId] = {
+                    populate: BI.debounce(populate, 0),
+                    options: {
+                        times: 1
+                    },
+                    loadWidget: tip
+                };
+            } else {
+                this.nodeLists[tId].loadWidget.destroy();
+                this.nodeLists[tId].loadWidget = tip;
+            }
+            BI.createWidget({
+                type: "bi.vertical",
+                element: o.subNodeListGetter(tId),
+                items: [tip]
+            });
+        },
+
+        refreshNodes: function (tId) {
+            var nodeList = this.nodeLists[tId];
+            nodeList.options.times++;
+            nodeList.loadWidget.setLoading();
+            nodeList.populate({
+                times: nodeList.options.times
+            });
+        },
+
+        removeNodeList: function (tId) {
+            this.nodeLists[tId].loadWidget.destroy();
+            this.nodeLists[tId].loadWidget = null;
+            delete this.nodeLists[tId];
+            if (BI.size(this.nodeLists) === 0) {
+                this.clear();
+            }
+        },
+
+        clear: function () {
+            var self = this;
+            BI.each(this.nodeLists, function (tId) {
+                self.removeNodeList(tId);
+            });
+            this.nodeLists = {};
+        }
+    });
+
+})();
\ No newline at end of file