diff --git a/snake.py b/snake.py
index 537316e..2e1817c 100644
--- a/snake.py
+++ b/snake.py
@@ -1,5 +1,6 @@
 import pygame
 from pygame import locals
+import random
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -20,6 +21,9 @@ 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
 
@@ -52,6 +56,9 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    if x == apple_x and apple_y:
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))