diff --git a/my_game.py b/my_game.py
index f11ca7d..6b6b633 100644
--- a/my_game.py
+++ b/my_game.py
@@ -19,28 +19,32 @@ hero = [pygame.image.load('hero1.png'),
 index = 0 
 zhuangtai = "running"
 y = 400
+nu = 30
 
 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_SPACE:
                 zhuangtai = "up"
 
     if zhuangtai == "up":
-        if y > 150:
-            y-=5
+        if nu > 0:
+            y -= nu
+            nu -=2
         else:
             zhuangtai = "down"
         
     if zhuangtai == "down":
-        if y < 400:
-            y += 5
+        if nu <= 30:
+            y += nu
+            nu += 2
         else:
             zhuangtai = "running"
-        
+            nu = 30
 
     wukong = hero[index]
     index += 1