diff --git a/bush.png b/bush.png
index a148708..6c34bd7 100644
Binary files a/bush.png and b/bush.png differ
diff --git a/my_game.py b/my_game.py
index 2ab78b9..7b09d08 100644
--- a/my_game.py
+++ b/my_game.py
@@ -57,15 +57,16 @@ while True:
         hero_list+=1
         if hero_list>len(hero)-1:
             hero_list=0
+    screen.blit(background, (0, 0))
+    screen.blit(road, (0, 500))
+    screen.blit(wukong, (150, y))
     if rect.x <= 0-rect.width:
         b = random.choice([stone,cacti,bush])
         rect=b.get_rect()
         rect.x=1000
         rect.y=500-rect.height
+    rect.x-=8
     screen.blit(b,(rect.x,rect.y))
-    screen.blit(background, (0, 0))
-    screen.blit(road, (0, 500))
-    screen.blit(wukong, (150, y))
     # 刷新画面
     pygame.display.update()
-    FPS.tick(60)
\ No newline at end of file
+    FPS.tick(50)
\ No newline at end of file