diff --git a/snake.py b/snake.py
index 31e1ede..0d6f357 100644
--- a/snake.py
+++ b/snake.py
@@ -19,7 +19,8 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
+apple_x = 360
+apple_y = 300
 setheading = "right"
 snake_head = right
 
@@ -52,8 +53,12 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
-    # 将背景图画上去
+    
+    if x == apple_ x and y ==apple_y:
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
+    position.pop(0)     
+
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
@@ -62,7 +67,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
\ No newline at end of file