diff --git a/components/tree-select/demo/basic.md b/components/tree-select/demo/basic.md
index 9fcf82cef4..6059d33fcc 100644
--- a/components/tree-select/demo/basic.md
+++ b/components/tree-select/demo/basic.md
@@ -40,13 +40,13 @@ class Demo extends React.Component {
         treeDefaultExpandAll
         onChange={this.onChange}
       >
-        <TreeNode value="parent 1" title="parent 1" key="0-1">
-          <TreeNode value="parent 1-0" title="parent 1-0" key="0-1-1">
-            <TreeNode value="leaf1" title="my leaf" key="random" />
-            <TreeNode value="leaf2" title="your leaf" key="random1" />
+        <TreeNode value="parent 1" title="parent 1">
+          <TreeNode value="parent 1-0" title="parent 1-0">
+            <TreeNode value="leaf1" title="my leaf" />
+            <TreeNode value="leaf2" title="your leaf" />
           </TreeNode>
-          <TreeNode value="parent 1-1" title="parent 1-1" key="random2">
-            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} key="random3" />
+          <TreeNode value="parent 1-1" title="parent 1-1">
+            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} />
           </TreeNode>
         </TreeNode>
       </TreeSelect>
diff --git a/components/tree-select/demo/checkable.md b/components/tree-select/demo/checkable.md
index 172dc7040f..8e37ce3cd6 100644
--- a/components/tree-select/demo/checkable.md
+++ b/components/tree-select/demo/checkable.md
@@ -72,7 +72,7 @@ class Demo extends React.Component {
       onChange: this.onChange,
       treeCheckable: true,
       showCheckedStrategy: SHOW_PARENT,
-      searchPlaceholder: 'Please select',
+      placeholder: 'Please select',
       style: {
         width: '100%',
       },
diff --git a/components/tree-select/demo/multiple.md b/components/tree-select/demo/multiple.md
index a94090a095..149183a724 100644
--- a/components/tree-select/demo/multiple.md
+++ b/components/tree-select/demo/multiple.md
@@ -41,13 +41,13 @@ class Demo extends React.Component {
         treeDefaultExpandAll
         onChange={this.onChange}
       >
-        <TreeNode value="parent 1" title="parent 1" key="0-1">
-          <TreeNode value="parent 1-0" title="parent 1-0" key="0-1-1">
-            <TreeNode value="leaf1" title="my leaf" key="random" />
-            <TreeNode value="leaf2" title="your leaf" key="random1" />
+        <TreeNode value="parent 1" title="parent 1">
+          <TreeNode value="parent 1-0" title="parent 1-0">
+            <TreeNode value="leaf1" title="my leaf" />
+            <TreeNode value="leaf2" title="your leaf" />
           </TreeNode>
-          <TreeNode value="parent 1-1" title="parent 1-1" key="random2">
-            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} key="random3" />
+          <TreeNode value="parent 1-1" title="parent 1-1">
+            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} />
           </TreeNode>
         </TreeNode>
       </TreeSelect>
diff --git a/components/tree-select/demo/suffix.md b/components/tree-select/demo/suffix.md
index 854d31173f..5ec89e5f77 100644
--- a/components/tree-select/demo/suffix.md
+++ b/components/tree-select/demo/suffix.md
@@ -44,13 +44,13 @@ class Demo extends React.Component {
         treeDefaultExpandAll
         onChange={this.onChange}
       >
-        <TreeNode value="parent 1" title="parent 1" key="0-1">
-          <TreeNode value="parent 1-0" title="parent 1-0" key="0-1-1">
-            <TreeNode value="leaf1" title="my leaf" key="random" />
-            <TreeNode value="leaf2" title="your leaf" key="random1" />
+        <TreeNode value="parent 1" title="parent 1">
+          <TreeNode value="parent 1-0" title="parent 1-0">
+            <TreeNode value="leaf1" title="my leaf" />
+            <TreeNode value="leaf2" title="your leaf" />
           </TreeNode>
-          <TreeNode value="parent 1-1" title="parent 1-1" key="random2">
-            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} key="random3" />
+          <TreeNode value="parent 1-1" title="parent 1-1">
+            <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} />
           </TreeNode>
         </TreeNode>
       </TreeSelect>
diff --git a/components/tree-select/demo/treeData.md b/components/tree-select/demo/treeData.md
index 3122e9d79d..b5e2ad3007 100644
--- a/components/tree-select/demo/treeData.md
+++ b/components/tree-select/demo/treeData.md
@@ -20,24 +20,20 @@ const treeData = [
   {
     title: 'Node1',
     value: '0-0',
-    key: '0-0',
     children: [
       {
         title: 'Child Node1',
         value: '0-0-1',
-        key: '0-0-1',
       },
       {
         title: 'Child Node2',
         value: '0-0-2',
-        key: '0-0-2',
       },
     ],
   },
   {
     title: 'Node2',
     value: '0-1',
-    key: '0-1',
   },
 ];
 
diff --git a/components/tree-select/index.en-US.md b/components/tree-select/index.en-US.md
index da17bc270a..f31eb43993 100644
--- a/components/tree-select/index.en-US.md
+++ b/components/tree-select/index.en-US.md
@@ -31,7 +31,6 @@ Tree selection control.
 | maxTagPlaceholder | Placeholder for not showing tags | ReactNode/function(omittedValues) | - |  |
 | multiple | Support multiple or not, will be `true` when enable `treeCheckable`. | boolean | false |  |
 | placeholder | Placeholder of the select input | string | - |  |
-| searchPlaceholder | Placeholder of the search input | string | - |  |
 | searchValue | work with `onSearch` to make search value controlled. | string | - |  |
 | treeIcon | Shows the icon before a TreeNode's title. There is no default style; you must set a custom style for it if set to `true` | boolean | false |  |
 | showCheckedStrategy | The way show selected item in box. **Default:** just show child nodes. **`TreeSelect.SHOW_ALL`:** show all checked treeNodes (include parent treeNode). **`TreeSelect.SHOW_PARENT`:** show checked treeNodes (just show parent treeNode). | enum { TreeSelect.SHOW_ALL, TreeSelect.SHOW_PARENT, TreeSelect.SHOW_CHILD } | TreeSelect.SHOW_CHILD |  |
diff --git a/components/tree-select/index.zh-CN.md b/components/tree-select/index.zh-CN.md
index 0c394a94c1..8997d56fc9 100644
--- a/components/tree-select/index.zh-CN.md
+++ b/components/tree-select/index.zh-CN.md
@@ -32,7 +32,6 @@ title: TreeSelect
 | maxTagPlaceholder | 隐藏 tag 时显示的内容 | ReactNode/function(omittedValues) | - |  |
 | multiple | 支持多选（当设置 treeCheckable 时自动变为 true） | boolean | false |  |
 | placeholder | 选择框默认文字 | string | - |  |
-| searchPlaceholder | 搜索框默认文字 | string | - |  |
 | searchValue | 搜索框的值，可以通过 `onSearch` 获取用户输入 | string | - |  |
 | treeIcon | 是否展示 TreeNode title 前的图标，没有默认样式，如设置为 true，需要自行定义图标相关样式 | boolean | false |  |
 | showCheckedStrategy | 定义选中项回填的方式。`TreeSelect.SHOW_ALL`: 显示所有选中节点(包括父节点). `TreeSelect.SHOW_PARENT`: 只显示父节点(当父节点下所有子节点都选中时). 默认只显示子节点. | enum{TreeSelect.SHOW_ALL, TreeSelect.SHOW_PARENT, TreeSelect.SHOW_CHILD } | TreeSelect.SHOW_CHILD |  |