diff --git a/src/tree-select/README.md b/src/tree-select/README.md
index 5eff60f63..676da3ed7 100644
--- a/src/tree-select/README.md
+++ b/src/tree-select/README.md
@@ -174,7 +174,7 @@ export default {
 
 | Attribute | Description | Type | Default |
 | --- | --- | --- | --- |
-| items | Required datasets for the component | _Item[]_ | `[]` |
+| items | Required datasets for the component | _TreeSelectItem[]_ | `[]` |
 | height | Height | _number \| string_ | `300` |
 | main-active-index | The index of selected parent node | _number \| string_ | `0` |
 | active-id | Id of selected item | _number \| string \|<br>(number \| string)[]_ | `0` |
@@ -183,10 +183,10 @@ export default {
 
 ### Events
 
-| Event | Description | Arguments |
-| --- | --- | --- |
-| click-nav | Emitted when parent node is selected | index: index of selected parent |
-| click-item | Emitted when item is selected | data: selected item |
+| Event      | Description                          | Arguments               |
+| ---------- | ------------------------------------ | ----------------------- |
+| click-nav  | Emitted when parent node is selected | _index: number_         |
+| click-item | Emitted when item is selected        | _item: TreeSelectChild_ |
 
 ### Slots
 
@@ -194,9 +194,9 @@ export default {
 | ------- | -------------------- |
 | content | Custom right content |
 
-### Data Structure of Item
+### Data Structure of TreeSelectItem
 
-`items` should be an array contains specified tree objects.
+`TreeSelectItem` should be an array contains specified tree objects.
 
 In every tree object, `text` property defines `id` stands for the unique key while the `children` contains sub-tree objects.
 
diff --git a/src/tree-select/README.zh-CN.md b/src/tree-select/README.zh-CN.md
index 5283ba3a4..8a7154d8b 100644
--- a/src/tree-select/README.zh-CN.md
+++ b/src/tree-select/README.zh-CN.md
@@ -182,7 +182,7 @@ export default {
 
 | 参数 | 说明 | 类型 | 默认值 |
 | --- | --- | --- | --- |
-| items | 分类显示所需的数据 | _Item[]_ | `[]` |
+| items | 分类显示所需的数据 | _TreeSelectItem[]_ | `[]` |
 | height | 高度，默认单位为`px` | _number \| string_ | `300` |
 | main-active-index | 左侧选中项的索引 | _number \| string_ | `0` |
 | active-id | 右侧选中项的 id，支持传入数组 | _number \| string \|<br>(number \| string)[]_ | `0` |
@@ -191,10 +191,10 @@ export default {
 
 ### Events
 
-| 事件名     | 说明                 | 回调参数                  |
-| ---------- | -------------------- | ------------------------- |
-| click-nav  | 点击左侧导航时触发   | index：被点击的导航的索引 |
-| click-item | 点击右侧选择项时触发 | data: 该点击项的数据      |
+| 事件名     | 说明                 | 回调参数                |
+| ---------- | -------------------- | ----------------------- |
+| click-nav  | 点击左侧导航时触发   | _index: number_         |
+| click-item | 点击右侧选择项时触发 | _item: TreeSelectChild_ |
 
 ### Slots
 
@@ -202,9 +202,9 @@ export default {
 | ------- | ------------------ |
 | content | 自定义右侧区域内容 |
 
-### Item 数据结构
+### TreeSelectItem 数据结构
 
-`items` 整体为一个数组，数组内包含一系列描述分类的对象，每个分类里，`text`表示当前分类的名称，`children`表示分类里的可选项。
+`TreeSelectItem` 整体为一个数组，数组内包含一系列描述分类的对象，每个分类里，`text` 表示当前分类的名称，`children` 表示分类里的可选项。
 
 ```js
 [