diff --git a/snake.py b/snake.py
index 4e437c1..4d1e4f3 100644
--- a/snake.py
+++ b/snake.py
@@ -61,7 +61,6 @@ while True:
         apple_y=num2*30 -30
     else:
         position.pop(0)
-    position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去