diff --git a/app/models.py b/app/models.py
index ca42b27..2f0ad6e 100644
--- a/app/models.py
+++ b/app/models.py
@@ -5,6 +5,7 @@ from enum import Enum
 from typing import Optional
 
 from pydantic import BaseModel
+from app.database import LazerUserAchievement  # 添加数据库模型导入
 
 
 class GameMode(str, Enum):
@@ -83,6 +84,14 @@ class UserAchievement(BaseModel):
     achieved_at: datetime
     achievement_id: int
 
+    # 添加数据库模型转换方法
+    def to_db_model(self, user_id: int) -> LazerUserAchievement:
+        return LazerUserAchievement(
+            user_id=user_id,
+            achievement_id=self.achievement_id,
+            achieved_at=self.achieved_at
+        )
+
 
 class RankHighest(BaseModel):
     rank: int