diff --git a/Demo/API/Assets/Scenes/InnerAudio.unity b/Demo/API/Assets/Scenes/InnerAudio.unity
index c06c8c906f33e8f955e3b84517e036f511a87012..bf94bf1dbd546f96a95f7e472f373ef56fd09e78 100644
--- a/Demo/API/Assets/Scenes/InnerAudio.unity
+++ b/Demo/API/Assets/Scenes/InnerAudio.unity
@@ -1199,18 +1199,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-      - m_Target: {fileID: 2105647632}
-        m_TargetAssemblyTypeName: AudioManager, Assembly-CSharp
-        m_MethodName: stopAllAudio
-        m_Mode: 1
-        m_Arguments:
-          m_ObjectArgument: {fileID: 0}
-          m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
-          m_IntArgument: 0
-          m_FloatArgument: 0
-          m_StringArgument: 
-          m_BoolArgument: 0
-        m_CallState: 2
 --- !u!114 &1439564064
 MonoBehaviour:
   m_ObjectHideFlags: 0
diff --git a/Demo/API/Assets/Scripts/AudioManager.cs b/Demo/API/Assets/Scripts/AudioManager.cs
index 3ad3806006f7466bbff9900e23b66e616309b5c7..54a38a18d323b04d95e16b139ef9621b5feb1ccb 100644
--- a/Demo/API/Assets/Scripts/AudioManager.cs
+++ b/Demo/API/Assets/Scripts/AudioManager.cs
@@ -9,10 +9,10 @@ public class AudioManager : MonoBehaviour
     private static int DEFAULT_AUDIO_COUNT = 10;
 
     // 创建音频队列
-    private Queue<WXInnerAudioContext> audioPool = new Queue<WXInnerAudioContext>();
+    private static Queue<WXInnerAudioContext> audioPool = new Queue<WXInnerAudioContext>();
 
     // 当前场景需要预下载的音频列表
-    private string[] audioList = {
+    private static string[] audioList = {
         "https://res.wx.qq.com/wechatgame/product/webpack/userupload/20220901/211827/CallMeTeenTop.mp3",
         "https://res.wx.qq.com/wechatgame/product/webpack/userupload/20220815/105451/1.mp3",
         "https://res.wx.qq.com/wechatgame/product/webpack/userupload/20220901/211846/Night-n.mp3",
@@ -21,7 +21,9 @@ public class AudioManager : MonoBehaviour
     };
 
     // 正在播放的音频对象列表
-    private List<WXInnerAudioContext> audioPlayArray = new List<WXInnerAudioContext>();
+    private static List<WXInnerAudioContext> audioPlayArray = new List<WXInnerAudioContext>();
+
+    private bool isDestroyed = false;
 
     // 初始化
     public void Start()
@@ -44,6 +46,10 @@ public class AudioManager : MonoBehaviour
 
     private WXInnerAudioContext getAudio()
     {
+        if (this.isDestroyed) {
+            return null;
+        }
+
         if (audioPool.Count == 0)
         {
             addAudio();
@@ -116,6 +122,10 @@ public class AudioManager : MonoBehaviour
     {
         var audioIndex = getAudio();
 
+        if (audioIndex == null) {
+            return;
+        }
+
         // 如果没有下文修改needDownload为false的函数，理论上创建的所有音频都是true，可以省去这一条
         audioIndex.needDownload = true;
 
@@ -137,6 +147,10 @@ public class AudioManager : MonoBehaviour
         // 但是再次使用该音频时会因为没有下载而需要再次下载，并不推荐这样使用
         var audioPlayRightNow = getAudio();
 
+        if (audioPlayRightNow == null) {
+            return;
+        }
+
         // 修改src会触发下载，所以设置needDownload属性要在修改src之前
         audioPlayRightNow.needDownload = false;
 
@@ -152,7 +166,10 @@ public class AudioManager : MonoBehaviour
 
     public void stopAllAudio()
     {
-        audioPlayArray.ForEach(audio => audio.Stop());
+        audioPlayArray.ForEach(audio => {
+            audio.OffCanplay();
+            audio.Stop();
+        });
     }
 
     public void playRandom()
@@ -163,4 +180,10 @@ public class AudioManager : MonoBehaviour
 
         playRightNow(index);
     }
+
+    private void OnDestroy()
+    {
+        this.isDestroyed = true;
+        this.stopAllAudio();
+    }
 }
\ No newline at end of file
diff --git a/Design/AudioOptimization.md b/Design/AudioOptimization.md
index b1e96b7fc06288bef39cf1bbbce5d46526a074d8..f21a20f34ba5f85eb84f726fcad2f65bc363d3c5 100644
--- a/Design/AudioOptimization.md
+++ b/Design/AudioOptimization.md
@@ -13,9 +13,6 @@
 参考[微信开发者文档](https://developers.weixin.qq.com/minigame/dev/api/media/audio/InnerAudioContext.html)
 其中src为音频地址，可填本地路径如 xx.wav，运行时会自动和配置的音频地址前缀(默认为DATA_CDN/Assets)做拼接得到最终线上地址。
 
-* 使用方法一:
-
-
 ```c#
 // 使用方法一：创建音频对象可以在初始化是加上needDownload = true，音频会先下载到本地，然后再播放
 // 保存本地后，同样的路径不会重复下载，再次使用时无需下载
@@ -59,6 +56,10 @@ WX.PreDownloadAudios(a, (int res) =>
         });
     }
 });
+
+// 停止音频播放
+audio.OffCanplay();
+audio.Stop();
 ```
 
 ## 参考示例