diff --git a/snake.py b/snake.py
index 537316e..784c884 100644
--- a/snake.py
+++ b/snake.py
@@ -1,6 +1,7 @@
 import pygame
 from pygame import locals
-
+import random
+from random import randint
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -19,7 +20,7 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
+apple_x,apple_y = 360,300
 setheading = "right"
 snake_head = right
 
@@ -52,6 +53,9 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    if x == apple_x and y == apple_y:
+        apple_x = (randint(0,630)//30)*30
+        apple_y = (randint(0,450)//30)*30
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -62,7 +66,7 @@ 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)
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