diff --git a/app/api/v1/auth.py b/app/api/v1/auth.py
index 84975bb..e4565f6 100644
--- a/app/api/v1/auth.py
+++ b/app/api/v1/auth.py
@@ -14,6 +14,8 @@ from app.services import user as user_service
 from app.core.exceptions import BusinessError
 from app.schemas.user import User
 from fastapi import Request
+import random
+import string
 # 创建日志记录器
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.DEBUG)
@@ -41,6 +43,10 @@ async def login(
     
     return StandardResponse(code=200, message="登录成功", data=User.model_validate(user))
 
+def generate_user_code():
+    """生成个人邀请码，6位数字加字母"""
+    return ''.join(random.choices(string.ascii_letters + string.digits, k=6))
+
 @router.post("/login/wechat", tags=["auth"])
 async def wechat_login(
     login_data: WechatLogin,
@@ -67,16 +73,41 @@ async def wechat_login(
         logger.info(f"用户状态: 新用户={is_new_user}")
         
         if is_new_user:
+            # 生成个人邀请码，6位数字加字母
+            user_code = generate_user_code()
+
             # 创建新用户
             user_create = UserCreate(
                 openid=openid,
-                unionid=unionid
+                unionid=unionid,
+                tryon_remain_count=settings.TRYON_REMAIN_COUNT,
+                user_code=user_code,
+                avatar=settings.DEFAULT_AVATAR,
+                nickname=f"搭友{user_code}"
             )
+
+            if login_data.referral_code:
+                user_create.referral_code = login_data.referral_code
+
+            # 获取推荐人，如果推荐人存在，则增加试穿次数
+            if user_create.referral_code:
+                referral_user = await user_service.get_user_by_user_code(db, user_code=user_create.referral_code)
+                if referral_user:
+                    referral_user.tryon_remain_count += settings.TRYON_ADDITIONAL_COUNT
+                    await user_service.update_user(db, user_id=referral_user.id, user_update=referral_user)
+
             user = await user_service.create_user(db, user=user_create)
             logger.info(f"创建新用户: id={user.id}")
         else:
             user = existing_user
             logger.info(f"现有用户登录: id={user.id}")
+
+            if user.user_code is None:
+                user.user_code = generate_user_code()
+                user.nickname = f"搭友{user.user_code}"
+                user.avatar = settings.DEFAULT_AVATAR
+                await user_service.update_user(db, user_id=user.id, user_update=user)
+
             
         # 创建访问令牌 - 使用openid作为标识
         access_token = security.create_access_token(subject=openid)
diff --git a/app/core/config.py b/app/core/config.py
index b2a863c..74ab437 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -10,6 +10,13 @@ class Settings(BaseSettings):
     PROJECT_NAME: str = "美搭Meida API"
     PROJECT_DESCRIPTION: str = "美搭Meida服务后端API"
     PROJECT_VERSION: str = "0.1.0"
+
+    # 试穿次数
+    TRYON_REMAIN_COUNT: int = 5
+    TRYON_ADDITIONAL_COUNT: int = 3
+
+    # 默认头像
+    DEFAULT_AVATAR: str = "https://aidress-1311994147.cos.ap-chengdu.myqcloud.com/uploads/20250415/a9fecdb0fa3549488f010f7b89fdef1c.png"
     
     # CORS设置
     BACKEND_CORS_ORIGINS: List[str] = ["*"]
diff --git a/app/models/users.py b/app/models/users.py
index 2866844..aa5aaca 100644
--- a/app/models/users.py
+++ b/app/models/users.py
@@ -13,6 +13,9 @@ class User(Base):
     unionid = Column(String(50), nullable=True, index=True)
     avatar = Column(String(255), nullable=True, comment="头像")
     nickname = Column(String(50), nullable=True, comment="昵称")
+    tryon_remain_count = Column(Integer, default=0, nullable=False, comment="剩余试穿次数")
+    user_code = Column(String(20), unique=True, nullable=True, index=True, comment="用户唯一邀请码")
+    referral_code = Column(String(20), nullable=True, index=True, comment="推荐人邀请码")
     create_time = Column(DateTime, default=func.now(), comment="创建时间")
     
     # 关系
@@ -31,5 +34,8 @@ class User(Base):
             "unionid": self.unionid,
             "avatar": self.avatar,
             "nickname": self.nickname,
+            "tryon_remain_count": self.tryon_remain_count,
+            "user_code": self.user_code,
+            "referral_code": self.referral_code,
             "create_time": self.create_time
         } 
\ No newline at end of file
diff --git a/app/schemas/auth.py b/app/schemas/auth.py
index b5d23d0..f1a61f8 100644
--- a/app/schemas/auth.py
+++ b/app/schemas/auth.py
@@ -4,6 +4,7 @@ from typing import Optional
 class WechatLogin(BaseModel):
     """微信登录请求"""
     code: str
+    referral_code: Optional[str] = None
 
 class Token(BaseModel):
     """令牌响应"""
diff --git a/app/schemas/user.py b/app/schemas/user.py
index 91a8de9..2c1eebb 100644
--- a/app/schemas/user.py
+++ b/app/schemas/user.py
@@ -8,6 +8,9 @@ class UserBase(BaseModel):
     unionid: Optional[str] = None
     avatar: Optional[str] = None
     nickname: Optional[str] = None
+    tryon_remain_count: Optional[int] = None
+    referral_code: Optional[str] = None
+    user_code: Optional[str] = None
 
 class UserCreate(UserBase):
     """创建用户请求模型"""
diff --git a/app/services/user.py b/app/services/user.py
index 4556f90..8237896 100644
--- a/app/services/user.py
+++ b/app/services/user.py
@@ -16,12 +16,19 @@ async def get_users(db: AsyncSession, skip: int = 0, limit: int = 100):
     result = await db.execute(select(User).offset(skip).limit(limit))
     return result.scalars().all()
 
+async def get_user_by_user_code(db: AsyncSession, user_code: str):
+    result = await db.execute(select(User).filter(User.user_code == user_code))
+    return result.scalars().first()
+
 async def create_user(db: AsyncSession, user: UserCreate):
     db_user = User(
         openid=user.openid,
         unionid=user.unionid,
         avatar=user.avatar,
-        nickname=user.nickname
+        nickname=user.nickname,
+        user_code=user.user_code,
+        tryon_remain_count=user.tryon_remain_count,
+        referral_code=user.referral_code
     )
     db.add(db_user)
     await db.commit()