diff --git a/zh-cn/application-dev/reference/apis/js-apis-media.md b/zh-cn/application-dev/reference/apis/js-apis-media.md
index 3c8aa1ea16d530223046662d5f4daecd58d748c3..007bf98aa4894db83b1fc689401c3504ecb96e6f 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-media.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-media.md
@@ -121,7 +121,7 @@ createAVRecorder(callback: AsyncCallback\<AVRecorder>): void
 
 **示例：**
 
-```js
+```ts
 let avRecorder: media.AVRecorder;
 
 media.createAVRecorder((error: BusinessError, recorder: media.AVRecorder) => {