diff --git a/snake.py b/snake.py
index ba70b5e..d9852e4 100644
--- a/snake.py
+++ b/snake.py
@@ -1,35 +1,29 @@
 import pygame
 from pygame import locals
 import random
-# 初始化pygame，为使用硬件做准备
 pygame.init()
-
-# 创建一个窗口
 screen = pygame.display.set_mode((1320,960))
-FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
-
-# 背景
+FPSCLOCK = pygame.time.Clock()
 background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')      # 头 朝右
-food = pygame.image.load('apple.png')       # 食物 苹果
-body = pygame.image.load('body.png')        # 身体
-left = pygame.image.load('left.png')        # 头 朝左
-up = pygame.image.load('up.png')            # 头 朝上
-down = pygame.image.load('down.png')        # 头 朝下
+right = pygame.image.load('right.png')
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 z = pygame.font.Font('neuropol.ttf',18)
-
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
 setheading = "right"
 snake_head = right
 a = 360
 b = 300
+c = 210
+d = 90
 score = 0
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
-            # 接收到退出事件后退出程序
             exit()
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != "left":
@@ -44,8 +38,6 @@ while True:
             if event.key == locals.K_DOWN and setheading != "up":
                 setheading = 'down'
                 snake_head = down
-
-    # 设置贪吃蛇的头部坐标
     if setheading == "right":
         x += 30
     elif setheading == "left":
@@ -61,26 +53,28 @@ while True:
         a *= 30
         b *= 30
         score += 10
+    elif x == c and y == d:
+        c = random.randint(0,43)
+        d = random.randint(0,31)
+        c *= 30
+        d *= 30
+        score += 10
     else:
         position.pop(0)
     if x < 0 or x > 1290 or y < 0 or y > 930:
         print("Your score is:" + str(score))
         exit()
-    # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (661, 0))
     screen.blit(background, (0, 481))
     screen.blit(background, (661, 481))
-    # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
-    # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
-    # 将果实画上去
     screen.blit(food, (a,b))
+    screen.blit(food, (c,d))
     info = "Score:" + str(score)
     text = z.render(info,True,(0,0,0))
     screen.blit(text,(540,10))  
-    # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(score/10+3)
\ No newline at end of file
+    FPSCLOCK.tick(score/20+10)
\ No newline at end of file