diff --git a/src/mask-editor/index.ts b/src/mask-editor/index.ts
index 8a0b298..4b5aadc 100644
--- a/src/mask-editor/index.ts
+++ b/src/mask-editor/index.ts
@@ -113,7 +113,7 @@ export default class MaskEditor extends Component<IOptions> {
       'canvasRender',
       debounce(() => {
         this.renderMask()
-        this.emit('change')
+        this.emit('change', this.canvas)
       }, 20)
     )
 
diff --git a/src/mask-editor/package.json b/src/mask-editor/package.json
index c596e9f..a4e93d8 100644
--- a/src/mask-editor/package.json
+++ b/src/mask-editor/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mask-editor",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Image mask editing",
   "luna": {
     "dependencies": [
diff --git a/src/mask-editor/react.tsx b/src/mask-editor/react.tsx
index 2692c0f..27c4440 100644
--- a/src/mask-editor/react.tsx
+++ b/src/mask-editor/react.tsx
@@ -4,6 +4,7 @@ import { useNonInitialEffect } from '../share/hooks'
 
 interface IMaskEditorProps extends IOptions {
   style?: CSSProperties
+  onChange?: (canvas: HTMLCanvasElement) => void
   onCreate?: (maskEditor: MaskEditor) => void
 }
 
@@ -18,6 +19,10 @@ const LunaMaskEditor: FC<IMaskEditorProps> = (props) => {
     })
     props.onCreate && props.onCreate(maskEditor.current)
 
+    if (props.onChange) {
+      maskEditor.current.on('change', props.onChange)
+    }
+
     return () => maskEditor.current?.destroy()
   }, [])
 
diff --git a/src/mask-editor/story.js b/src/mask-editor/story.js
index db80b46..233df0c 100644
--- a/src/mask-editor/story.js
+++ b/src/mask-editor/story.js
@@ -40,6 +40,10 @@ const def = story(
 
     onCreate(maskEditor, maskContainer)
 
+    maskEditor.on('change', () => {
+      console.log('mask change')
+    })
+
     return maskEditor
   },
   {
@@ -59,6 +63,9 @@ const def = story(
                 onCreate(maskEditor, maskContainer.current)
               }
             }}
+            onChange={() => {
+              console.log('mask change')
+            }}
           />
           <div
             style={{