diff --git a/components/tree-select/index.en-US.md b/components/tree-select/index.en-US.md
index 5824f785d..709df63e1 100644
--- a/components/tree-select/index.en-US.md
+++ b/components/tree-select/index.en-US.md
@@ -28,7 +28,7 @@
 | treeDataSimpleMode | Enable simple mode of treeData.(treeData should like this: [{id:1, pId:0, value:'1', label:"test1",...},...], pId is parent node's id) | false\|Array<{ id: string, pId: string, rootPId: null }> | false |
 | treeDefaultExpandAll | Whether to expand all treeNodes by default | boolean | false |
 | treeDefaultExpandedKeys | Default expanded treeNodes | string\[] \| number\[] | - |
-| treeExpandedKeys | Set expanded keys | string\[] \| number\[] | - |
+| treeExpandedKeys(.sync) | Set expanded keys | string\[] \| number\[] | - |
 | treeNodeFilterProp | Will be used for filtering if `filterTreeNode` returns true | string | 'value' |
 | treeNodeLabelProp | Will render as content of select | string | 'title' |
 | value(v-model) | To set the current selected treeNode(s). | string\|string\[] | - |
diff --git a/components/tree-select/index.zh-CN.md b/components/tree-select/index.zh-CN.md
index 39fea9f54..4d879304d 100644
--- a/components/tree-select/index.zh-CN.md
+++ b/components/tree-select/index.zh-CN.md
@@ -28,7 +28,7 @@
 | treeDataSimpleMode | 使用简单格式的 treeData，具体设置参考可设置的类型 (此时 treeData 应变为这样的数据结构: [{id:1, pId:0, value:'1', label:"test1",...},...], `pId` 是父节点的 id) | false\|Array<{ id: string, pId: string, rootPId: null }> | false |
 | treeDefaultExpandAll | 默认展开所有树节点 | boolean | false |
 | treeDefaultExpandedKeys | 默认展开的树节点 | string\[] \| number\[] | - |
-| treeExpandedKeys | 设置展开的树节点 | string\[] \| number\[] | - |
+| treeExpandedKeys(.sync) | 设置展开的树节点 | string\[] \| number\[] | - |
 | treeNodeFilterProp | 输入项过滤对应的 treeNode 属性 | string | 'value' |
 | treeNodeLabelProp | 作为显示的 prop 设置 | string | 'title' |
 | value(v-model) | 指定当前选中的条目 | string/string\[] | - |
diff --git a/components/vc-tree-select/src/Base/BasePopup.jsx b/components/vc-tree-select/src/Base/BasePopup.jsx
index 34d8b215e..3d8a39747 100644
--- a/components/vc-tree-select/src/Base/BasePopup.jsx
+++ b/components/vc-tree-select/src/Base/BasePopup.jsx
@@ -140,6 +140,7 @@ const BasePopup = {
           this.__emit('treeExpanded')
         })
       }
+      this.__emit('update:treeExpandedKeys', expandedKeyList)
       this.__emit('treeExpand', expandedKeyList)
     },