diff --git a/docs/treeTable/index.md b/docs/treeTable/index.md
index 27317819..74d0bd6e 100644
--- a/docs/treeTable/index.md
+++ b/docs/treeTable/index.md
@@ -40,6 +40,7 @@ toc: true
 | [treeTable.expandAll(id, expandFlag)](#expandAll)  | 展开或关闭全部节点。 |
 | [treeTable.setRowChecked(id, opts)](#setRowChecked) | 设置行选中状态 |
 | [treeTable.checkAllNodes(id, checked)](#checkAllNodes) | 全选或取消全选 |
+| [treeTable.checkStatus(id, includeHalfCheck)](#checkStatus) | 获取选中行相关数据 |
 | [treeTable.on(\'event(filter)\', callback)](#on) | treeTable 相关事件 |
 
 <h3 id="render" lay-toc="{level: 2}">渲染</h3>
@@ -354,6 +355,24 @@ treeTable.render({
 treeTable.checkAllNodes('test', true);  // 全选 
 ```
 
+<h3 id="checkStatus" lay-pid="api" class="ws-anchor ws-bold">获取行选中相关数据</h3>
+
+`treeTable.checkStatus(id, includeHalfCheck);`
+
+- 参数 `id` : treeTable 渲染时的 `id` 属性值
+- 参数 `includeHalfCheck` : 是否包含半选数据
+
+```js
+// 渲染
+treeTable.render({
+  elem: '', // 绑定元素选择器
+  id: 'test', // 自定义 id 索引
+  // 其他属性 …
+});
+
+treeTable.checkStatus('test', true);  // 包含半选 
+```
+
 
 <h3 id="on" lay-toc="{level: 2}">事件</h3>