diff --git a/packages/engine/src/modules/classes.ts b/packages/engine/src/modules/classes.ts
index 11d1e7089..9547eba7a 100644
--- a/packages/engine/src/modules/classes.ts
+++ b/packages/engine/src/modules/classes.ts
@@ -8,6 +8,7 @@ import {
   SettingPropEntry,
   SettingTopEntry,
   Selection,
+  Prop,
 } from '@alilc/lowcode-shell';
 import { Node as InnerNode } from '@alilc/lowcode-designer';
 
@@ -22,4 +23,5 @@ export default {
   SettingTopEntry,
   InnerNode,
   Selection,
+  Prop,
 };
diff --git a/packages/engine/src/modules/symbols.ts b/packages/engine/src/modules/symbols.ts
index a022b848a..7f72f53e0 100644
--- a/packages/engine/src/modules/symbols.ts
+++ b/packages/engine/src/modules/symbols.ts
@@ -9,6 +9,7 @@ import {
   settingPropEntrySymbol,
   settingTopEntrySymbol,
   designerCabinSymbol,
+  propSymbol,
 } from '@alilc/lowcode-shell';
 
 export default {
@@ -22,4 +23,5 @@ export default {
   settingPropEntrySymbol,
   settingTopEntrySymbol,
   designerCabinSymbol,
+  propSymbol,
 };
diff --git a/packages/shell/src/api/material.ts b/packages/shell/src/api/material.ts
index eca386c5a..cfc84620f 100644
--- a/packages/shell/src/api/material.ts
+++ b/packages/shell/src/api/material.ts
@@ -170,10 +170,16 @@ export class Material implements IPublicApiMaterial {
    * 监听 assets 变化的事件
    * @param fn
    */
-  onChangeAssets(fn: () => void) {
-    // 设置 assets，经过 setAssets 赋值
-    this[editorSymbol].onGot('assets', fn);
-    // 增量设置 assets，经过 loadIncrementalAssets 赋值
-    this[editorSymbol].eventBus.on('designer.incrementalAssetsReady', fn);
+  onChangeAssets(fn: () => void): Function {
+    const dispose = [
+      // 设置 assets，经过 setAssets 赋值
+      this[editorSymbol].onGot('assets', fn),
+      // 增量设置 assets，经过 loadIncrementalAssets 赋值
+      this[editorSymbol].eventBus.on('designer.incrementalAssetsReady', fn),
+    ];
+
+    return () => {
+      dispose.forEach(d => d && d());
+    };
   }
 }
diff --git a/packages/types/src/shell/api/material.ts b/packages/types/src/shell/api/material.ts
index deec23d52..c8834816b 100644
--- a/packages/types/src/shell/api/material.ts
+++ b/packages/types/src/shell/api/material.ts
@@ -104,5 +104,5 @@ export interface IPublicApiMaterial {
    * add callback for assets changed event
    * @param fn
    */
-  onChangeAssets(fn: () => void): void;
+  onChangeAssets(fn: () => void): Function;
 }