diff --git a/main.py b/main.py
index 724fc84b006cef4f6f7a992e88f42bbfa72ee8c7..9c7d88d8f260a945118ca5054cc049ed750c2c4d 100644
--- a/main.py
+++ b/main.py
@@ -99,6 +99,12 @@ def show_text(screen, pos, text, color, font_bold = False, font_size = 60, font_
     #绘制文字  
     screen.blit(text_fmt, pos)
 
+def reset_game():
+    snake = Snake()
+    food = Food()
+    scores = 0
+    isdead = False
+    return snake, food, scores, isdead
      
 def main():
     pygame.init()
@@ -106,22 +112,23 @@ def main():
     screen = pygame.display.set_mode(screen_size)
     pygame.display.set_caption('Snake')
     clock = pygame.time.Clock()
-    scores = 0
-    isdead = False
+
     
-    # 蛇/食物
-    snake = Snake()
-    food = Food()
+    # 初始化游戏状态
+    snake, food, scores, isdead = reset_game()
     
     while True:
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
+                pygame.quit()
                 sys.exit()
+                
             if event.type == pygame.KEYDOWN:
-                snake.changedirection(event.key)
-                # 死后按space重新
+                if not isdead:
+                    snake.changedirection(event.key)
+                # 游戏结束后按空格键重置
                 if event.key == pygame.K_SPACE and isdead:
-                    return main()
+                    snake, food, scores, isdead = reset_game()
                 
             
         screen.fill((255,255,255))