diff --git a/snake.py b/snake.py
index 537316e..212305d 100644
--- a/snake.py
+++ b/snake.py
@@ -1,9 +1,13 @@
+import random
+
 import pygame
+
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
-
+apple_x = 300
+apple_y = 360
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
@@ -52,6 +56,10 @@ while True:
     else:
         y += 30
     position.append((x, y))
+
+    if x == apple_x and y == apple_y:
+        apple_x = random.randint(0,160)
+        apple_y = random.randint(0,480)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -62,7 +70,7 @@ 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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