diff --git a/docs/en-US/component/tree-select.md b/docs/en-US/component/tree-select.md
index ae77144594..ce0ce0f0d8 100644
--- a/docs/en-US/component/tree-select.md
+++ b/docs/en-US/component/tree-select.md
@@ -95,7 +95,9 @@ tree-select/lazy
 
 :::
 
-## Attributes
+## API
+
+### Attributes
 
 Since this component combines the functions of components `el-tree` and `el-select`,
 the original properties have not been changed, so no repetition here,
@@ -106,8 +108,23 @@ and please go to the original component to view the documentation.
 | [tree](./tree.md#attributes)            | [tree](./tree.md#method)      | [tree](./tree.md#events)            | [tree](./tree.md#slots)            |
 | [select](./select.md#select-attributes) | [select](./select.md#methods) | [select](./select.md#select-events) | [select](./select.md#select-slots) |
 
-### Own Attributes
+#### Own Attributes
 
-| Name                      | Description                                                                                                         | Type  | Accepted Values | Default |
-| ------------------------- | ------------------------------------------------------------------------------------------------------------------- | ----- | --------------- | ------- |
-| cacheData **(\> 2.2.26)** | The cached data of the lazy node, the structure is the same as the data, used to get the label of the unloaded data | array | —               | —       |
+| Name                | Description                                                                                                         | Type                     | Default |
+| ------------------- | ------------------------------------------------------------------------------------------------------------------- | ------------------------ | ------- |
+| cacheData ^(2.2.26) | The cached data of the lazy node, the structure is the same as the data, used to get the label of the unloaded data | ^[object]`CacheOption[]` | []      |
+
+## Type Declarations
+
+<details>
+  <summary>Show declarations</summary>
+
+```ts
+type CacheOption = {
+  value: string | number | boolean | object
+  currentLabel: string | number
+  isDisabled: boolean
+}
+```
+
+</details>
diff --git a/packages/components/tree-select/src/tree-select.vue b/packages/components/tree-select/src/tree-select.vue
index 9e84ad7fff..d236c3c4ed 100644
--- a/packages/components/tree-select/src/tree-select.vue
+++ b/packages/components/tree-select/src/tree-select.vue
@@ -15,6 +15,9 @@ export default defineComponent({
   props: {
     ...ElSelect.props,
     ...ElTree.props,
+    /**
+     * @description The cached data of the lazy node, the structure is the same as the data, used to get the label of the unloaded data
+     */
     cacheData: {
       type: Array,
       default: () => [],