diff --git a/my_game.py b/my_game.py
index 006ed0c..e21c359 100644
--- a/my_game.py
+++ b/my_game.py
@@ -32,13 +32,21 @@ y = 400
 jumpState = "runing"
 t = 30
 sb=B(bush,cacti,stone)
-sp=pygame.sprite.Group()
+sp_list=pygame.sprite.Group()
 time=0
 while True:
-    if time=60:
+    time+=1
+    if time==60:
         time=0
-        num=random.randint(0,50)
-        screen.blit(sb.image, (sb.rect.x, sb.rect.y)) 
+        num=random.randint(0,100)
+        if num>40:
+            sb=B(bush,cacti,stone)
+            sp_list.add(sb)
+    for vk in sp_list:
+        vk.rect.x-=8
+        screen.blit(vk.image, (vk.rect.x, vk.rect.y)) 
+        if vk.rect.x<=0-vk.rect.width:
+            vk.kill()
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
@@ -79,13 +87,8 @@ while True:
     screen.blit(road, (road_x, 500))     # 路
     screen.blit(wukong, (150, y))     # 悟空
 
-    if sb.rect.x <= 0-sb .rect.width:      # 障碍物消失
-        # 创建障碍物对象
-        aa=B(bush,cacti,stone)
-    sb.rect.x -= 8
-    
  
-    
+
     # 刷新画面
     pygame.display.update()
     FPS.tick(25)
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