diff --git a/zh-cn/application-dev/media/media/using-soundpool-for-playback.md b/zh-cn/application-dev/media/media/using-soundpool-for-playback.md
index 732fbfba8f6b74a51c89c0dc0368888752ee24c0..c5bbf677362d094fe17a00628df38978421db269 100644
--- a/zh-cn/application-dev/media/media/using-soundpool-for-playback.md
+++ b/zh-cn/application-dev/media/media/using-soundpool-for-playback.md
@@ -220,7 +220,7 @@ let audioRendererInfo: audio.AudioRendererInfo = {
   usage: audio.StreamUsage.STREAM_USAGE_MUSIC,
   rendererFlags: 1
 }
-let PlayParameters: media.PlayParameters = {
+let playParameters: media.PlayParameters = {
   loop: 3, // 循环4次
   rate: audio.AudioRendererRate.RENDER_RATE_NORMAL, // 正常倍速
   leftVolume: 0.5, // range = 0.0-1.0
@@ -264,7 +264,7 @@ function setErrorCallback() {
 }
 async function PlaySoundPool() {
   // 开始播放,这边play也可带播放播放的参数PlayParameters
-  await soundPool.play(soundID, playParameters, (error, streamID: number) => {
+  await soundPool.play(soundId, playParameters, (error, streamID: number) => {
     if (error) {
       console.info(`play sound Error: errCode is ${error.code}, errMessage is ${error.message}`)
     } else {