diff --git a/zh-cn/application-dev/media/video-recorder.md b/zh-cn/application-dev/media/video-recorder.md
index e25375a5a471355af28060e20dcfc9988d618e52..efe3d29d97b70f6bf3870fff05206d3196633800 100644
--- a/zh-cn/application-dev/media/video-recorder.md
+++ b/zh-cn/application-dev/media/video-recorder.md
@@ -27,7 +27,7 @@ import media from '@ohos.multimedia.media'
 import mediaLibrary from '@ohos.multimedia.mediaLibrary'
 export class VideoRecorderDemo {
   private testFdNumber; // 用于保存fd地址
-  // pathName是传入的录制文件名,例如:01.mp3,生成后的文件地址:/storage/media/100/local/files/Video/01.mp4
+  // pathName是传入的录制文件名,例如:01.mp4,生成后的文件地址:/storage/media/100/local/files/Video/01.mp4
   // 使用mediaLibrary需要添加以下权限, ohos.permission.MEDIA_LOCATION、ohos.permission.WRITE_MEDIA、ohos.permission.READ_MEDIA
   async getFd(pathName) {
     let displayName = pathName;