diff --git a/scoreboard.py b/scoreboard.py
index bf357bc..6cf2d32 100644
--- a/scoreboard.py
+++ b/scoreboard.py
@@ -24,3 +24,14 @@ class Scoreboard():
         self.prep_level()
         self.prep_ships()
 
+    def prep_score(self):
+        """将得分转换为一幅渲染的图像"""
+        rounded_score = int(round(self.stats.score, -1))
+        score_str = "{:,}".format(rounded_score)
+        self.score_image = self.font.render(score_str, True, self.text_color,
+                                            self.ai_settings.bg_color)
+
+        # 将得分放在屏幕右上角
+        self.score_rect = self.score_image.get_rect()
+        self.score_rect.right = self.screen_rect.right - 20
+        self.score_rect.top = 20
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