diff --git a/Assets/04.AudioCore/RunTime/Base/MusicPlayer.cs b/Assets/04.AudioCore/RunTime/Base/MusicPlayer.cs
index b05d2a7..13ece29 100644
--- a/Assets/04.AudioCore/RunTime/Base/MusicPlayer.cs
+++ b/Assets/04.AudioCore/RunTime/Base/MusicPlayer.cs
@@ -89,11 +89,11 @@ namespace Stary.Evo.AudioCore
             {
                 if (currentAudioSource.volume > targetVolume)
                 {
-                    currentAudioSource.volume -= startVolume * Time.deltaTime / fadeDuration;
+                    currentAudioSource.volume -= (startVolume-targetVolume) * Time.deltaTime / fadeDuration;
                 }
                 else
                 {
-                    currentAudioSource.volume += startVolume * Time.deltaTime / fadeDuration;
+                    currentAudioSource.volume += (targetVolume-startVolume) * Time.deltaTime / fadeDuration;
                 }
 
                 if (Mathf.Abs(currentAudioSource.volume - targetVolume) < 0.01f)
diff --git a/Assets/04.AudioCore/package.json b/Assets/04.AudioCore/package.json
index 5eab307..dd263ab 100644
--- a/Assets/04.AudioCore/package.json
+++ b/Assets/04.AudioCore/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.staryevo.audiocore",
-  "version": "1.0.12",
+  "version": "1.0.13",
   "displayName": "04.AudioCore",
   "description": "音频播放工具",
   "unity": "2021.3",