diff --git a/ship.py b/ship.py
index e3f6621..20dbe18 100644
--- a/ship.py
+++ b/ship.py
@@ -50,3 +50,7 @@ class Ship(Sprite):
         """让飞船在屏幕上居中"""
         self.center = self.screen_rect.centerx
         self.centery = self.screen_rect.bottom
+
+    def blitme(self):
+        """在指定位置绘制飞船"""
+        self.screen.blit(self.image, self.rect)