diff --git a/main.py b/main.py
index 724fc84b006cef4f6f7a992e88f42bbfa72ee8c7..e33a5662dda46702ee0bc384097f5fa64b8d9ac8 100644
--- a/main.py
+++ b/main.py
@@ -82,8 +82,20 @@ class Food:
             # 不靠墙太近 25 ~ SCREEN_X-25 之间
             for pos in range(25,SCREEN_X-25,25):
                 allpos.append(pos)
-            self.rect.left = random.choice(allpos)
-            self.rect.top  = random.choice(allpos)
+            while True:
+                self.rect.left = random.choice(allpos)
+                self.rect.top = random.choice(allpos)
+            
+                # 检查食物位置是否与蛇身体重合
+                overlap = False
+                for segment in snake.body:
+                    if segment.colliderect(self.rect):
+                        overlap = True
+                        break
+            
+                if not overlap:
+                    break
+                    
             print(self.rect)