diff --git a/ship.py b/ship.py
index 92d2658..6a44f29 100644
--- a/ship.py
+++ b/ship.py
@@ -41,3 +41,7 @@ class Ship(Sprite):
             self.centery -= self.ai_settings.ship_speed_factor
         if self.moving_down and self.rect.bottom < self.screen_rect.bottom:
             self.centery += self.ai_settings.ship_speed_factor
+
+        # 根据self.center更新rect对象
+        self.rect.centerx = self.center
+        self.rect.centery = self.centery