diff --git a/source/state/level.py b/source/state/level.py
index e0b859f..45132ed 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -60,9 +60,6 @@ class Level(tool.State):
                 self.game_info[c.LITTLEGAME_COMPLETIONS] += 1
             self.done = True
             self.next = c.MAIN_MENU
-            pg.mixer.music.stop()
-            pg.mixer.music.load(os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))) ,"resources", "music", "intro.opus"))
-            pg.mixer.music.play(-1, 0)
             with open(c.USERDATA_PATH, "w") as f:
                 userdata = {}
                 for i in self.game_info:
@@ -554,9 +551,6 @@ class Level(tool.State):
                 self.done = True
                 self.next = c.MAIN_MENU
                 self.persist = {c.CURRENT_TIME:0, c.LEVEL_NUM:self.persist[c.LEVEL_NUM], c.LITTLEGAME_NUM:self.persist[c.LITTLEGAME_NUM]}
-                pg.mixer.music.stop()
-                pg.mixer.music.load(os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))) ,"resources", "music", "intro.opus"))
-                pg.mixer.music.play(-1, 0)
                 # 播放点击音效
                 pg.mixer.Sound(os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))) ,"resources", "sound", "buttonclick.ogg")).play()
 
diff --git a/source/state/mainmenu.py b/source/state/mainmenu.py
index 638c24a..f9c09b4 100644
--- a/source/state/mainmenu.py
+++ b/source/state/mainmenu.py
@@ -14,6 +14,10 @@ class Menu(tool.State):
         self.game_info = persist
         self.setupBackground()
         self.setupOptions()
+        self.setupOptionButton()
+        pg.mixer.music.stop()
+        pg.mixer.music.load(os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))) ,"resources", "music", "intro.opus"))
+        pg.mixer.music.play(-1, 0)
         pg.display.set_caption(c.ORIGINAL_CAPTION)
 
     def setupBackground(self):
@@ -172,6 +176,7 @@ class Menu(tool.State):
 
         # 音量+、音量-
     
+    # 在选项菜单打开时，检测是否点击到返回
     def checkReturnClick(self, mouse_pos):
         x, y = mouse_pos
         if (x >= self.return_button_rect.x and x <= self.return_button_rect.right and
diff --git a/source/tool.py b/source/tool.py
index f4d2683..78b61ef 100755
--- a/source/tool.py
+++ b/source/tool.py
@@ -229,8 +229,3 @@ except:
 GFX = load_all_gfx(os.path.join(os.path.dirname(os.path.dirname(__file__)) ,os.path.join("resources","graphics")))
 ZOMBIE_RECT = loadZombieImageRect()
 PLANT_RECT = loadPlantImageRect()
-
-# 播放音乐
-pg.mixer.init()
-pg.mixer.music.load(os.path.join(os.path.dirname(os.path.dirname(__file__)) ,"resources", "music", "intro.opus"))
-pg.mixer.music.play(-1, 0)