diff --git a/packages/semi-foundation/tree/constants.ts b/packages/semi-foundation/tree/constants.ts
index 3e91c2d6de..a0dba6bd66 100644
--- a/packages/semi-foundation/tree/constants.ts
+++ b/packages/semi-foundation/tree/constants.ts
@@ -7,6 +7,7 @@ const cssClasses = {
 
 const strings = {
     EXPAND_ACTION: [false, 'click', 'doubleClick'],
+    JSON_KEY_SPLIT: '_SEMI_TREE_SPLIT_',
 };
 
 const numbers = {};
diff --git a/packages/semi-foundation/tree/foundation.ts b/packages/semi-foundation/tree/foundation.ts
index eb11d45051..540c98f943 100644
--- a/packages/semi-foundation/tree/foundation.ts
+++ b/packages/semi-foundation/tree/foundation.ts
@@ -23,6 +23,7 @@ import {
 } from './treeUtil';
 
 import type { KeyMapProps } from './treeUtil';
+import { strings } from './constants';
 export type { KeyMapProps };
 
 export interface BasicTreeNodeProps {
@@ -415,7 +416,7 @@ export default class TreeFoundation extends BaseFoundation<TreeAdapter, BasicTre
 
     notifyJsonChange(key: string[] | string, e: any) {
         const data = this.getProp('treeDataSimpleJson');
-        const selectedPath = normalizedArr(key).map(i => i.replace('-', '.'));
+        const selectedPath = normalizedArr(key).map(i => i.replaceAll(strings.JSON_KEY_SPLIT, '.'));
         const value = pick(data, selectedPath);
         this._adapter.notifyChange(value as BasicValue);
     }
diff --git a/packages/semi-foundation/tree/treeUtil.ts b/packages/semi-foundation/tree/treeUtil.ts
index c8eff086c0..a7b4c1b80c 100644
--- a/packages/semi-foundation/tree/treeUtil.ts
+++ b/packages/semi-foundation/tree/treeUtil.ts
@@ -4,6 +4,7 @@
  */
 
 import { difference, uniq, max, isObject, isNull, isUndefined, isEmpty, pick, get, omit } from 'lodash';
+import { strings } from './constants';
 
 export interface KeyEntities {
     [x: string]: any
@@ -98,7 +99,7 @@ export function convertJsonToData(treeJson: TreeDataSimpleJson) {
     const treeData: any[] = [];
     const traverseNode = (key: string, children: any, path: any, res: any[]) => {
         const currPath = [...path, key];
-        const itemKey = currPath.join('-');
+        const itemKey = currPath.join(strings.JSON_KEY_SPLIT);
 
         const newNode: NodeData = {
             key: itemKey,
diff --git a/packages/semi-ui/tree/_story/tree.stories.jsx b/packages/semi-ui/tree/_story/tree.stories.jsx
index 6ec495ff5a..fb0a3f2a1c 100644
--- a/packages/semi-ui/tree/_story/tree.stories.jsx
+++ b/packages/semi-ui/tree/_story/tree.stories.jsx
@@ -276,8 +276,13 @@ const treeDataWithNode = [
 
 const treeJson = {
   Node1: {
-    Child1: '0-0-1',
-    Child2: '0-0-2',
+    Child1: {
+      child11: '0-0-1',
+      child12: '0-0-2'
+    },
+    Child2: {
+      child21: '0-1-1',
+    },
   },
   Node2: '0-1',
 };
@@ -2926,7 +2931,7 @@ export const KeyMaps = () => {
   }, []);
 
   const normalExpanded = useCallback((expandedKeys, { expanded, node }) => {
-    console.log('onExpanded', expandedKeys, expanded, cloneDeep(node));
+    console.log('onExpanded', expandedKeys, expanded, copy(node));
 
   }, []);