diff --git a/module/block.py b/module/block.py
index 5455ccd..dc167bb 100644
--- a/module/block.py
+++ b/module/block.py
@@ -46,13 +46,10 @@ class Block:
     def get_collision_surface(self) -> tuple[int, int, int, int]:
         # 获得方块表面界限（碰撞面）
         # 上、右、下、左
-        real_x = self.x * BLOCK_SIZE + BLOCK_SIZE / 2
-        real_y = self.y * BLOCK_SIZE + BLOCK_SIZE / 2
-
-        top = real_y - BLOCK_SIZE / 2
-        bottom = real_y + BLOCK_SIZE / 2
-        left = real_x - BLOCK_SIZE / 2
-        right = real_x + BLOCK_SIZE / 2
+        top = self.y * BLOCK_SIZE
+        bottom = top + BLOCK_SIZE
+        left = self.x * BLOCK_SIZE
+        right = left + BLOCK_SIZE
         return top, right, bottom, left
 
     def get_center_vector(self):