diff --git a/snake.py b/snake.py
index 7fcd541..b979954 100644
--- a/snake.py
+++ b/snake.py
@@ -56,9 +56,12 @@ while True:
         y += 30
     position.append((x, y))
     if x==apple_x and y==apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
-    position.pop(0)
+        bb=random.randint(0,21)
+        pp=random.randint(0,15)
+        apple_x=bb*30
+        apple_y=pp*30
+    else:
+        position.pop(0)
     # 将背景图画上去