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 709d86bc4f38536fbdbb8ccff17f03f7dce82611..d02dcbddf3a27201da575a82819fe4a0f4b544e0 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-media.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-media.md
@@ -1071,7 +1071,7 @@ getCurrentTrack(trackType: MediaType, callback: AsyncCallback\<number>): void
 let mediaType = media.MediaType.MEDIA_TYPE_AUD;
 let trackIndex = null;
 
-avPlayer.getCurrentTrack(mediaType  (err, index) => {
+avPlayer.getCurrentTrack(mediaType, (err, index) => {
   if (err == null) {
     console.info('getCurrentTrack success');
     trackIndex = index;