diff --git a/cocos/audio/apple/AudioEngine-inl.h b/cocos/audio/apple/AudioEngine-inl.h
index 365afcf3cc..862690411a 100644
--- a/cocos/audio/apple/AudioEngine-inl.h
+++ b/cocos/audio/apple/AudioEngine-inl.h
@@ -36,7 +36,7 @@
 
 NS_CC_BEGIN
     namespace experimental{
-#define MAX_AUDIOINSTANCES 32
+#define MAX_AUDIOINSTANCES 24
 
 class AudioEngineThreadPool;