diff --git a/src/common.ts b/src/common.ts
index 1adbe36e8a..4a18766dfe 100644
--- a/src/common.ts
+++ b/src/common.ts
@@ -115,7 +115,7 @@ export type InfinityScroll = TScroll;
 
 export interface ScrollToElementParams {
   /** 跳转元素下标 */
-  index: number;
+  index?: number;
   /** 跳转元素距离顶部的距离 */
   top?: number;
   /** 单个元素高度非固定场景下，即 isFixedRowHeight = false。延迟设置元素位置，一般用于依赖不同高度异步渲染等场景，单位：毫秒 */
@@ -124,5 +124,5 @@ export interface ScrollToElementParams {
 }
 
 export interface ComponentScrollToElementParams extends ScrollToElementParams {
-  key: string | number;
+  key?: string | number;
 }
diff --git a/src/tree/_example/vscroll.jsx b/src/tree/_example/vscroll.jsx
index 280a7564d7..9bfc2d8a06 100644
--- a/src/tree/_example/vscroll.jsx
+++ b/src/tree/_example/vscroll.jsx
@@ -13,7 +13,6 @@ export default () => {
       newOptions.push({
         label: `第${i}段`,
         value: i,
-        key: i,
         children: [
           {
             label: `第${i}段第1个子节点`,
@@ -30,7 +29,7 @@ export default () => {
   }, []);
 
   const handleScroll = () => {
-    treeRef.current.scrollTo({ index: '10', behavior: 'smooth' });
+    treeRef.current.scrollTo({ key: '10.1', behavior: 'smooth' });
   };
 
   const defaultChecked = ['1.2', '2.2'];