diff --git a/alembic/versions/b2d35cbc76bd_init.py b/alembic/versions/b2d35cbc76bd_init.py
index 5d81b98..6a91918 100644
--- a/alembic/versions/b2d35cbc76bd_init.py
+++ b/alembic/versions/b2d35cbc76bd_init.py
@@ -58,7 +58,7 @@ def upgrade() -> None:
     sa.Column('user_id', sa.Integer(), autoincrement=True, nullable=False, comment='用户id'),
     sa.Column('nickname', sa.String(length=20), nullable=False, comment='昵称'),
     sa.Column('gender', sa.Integer(), nullable=True, comment='性别'),
-    sa.Column('avatar_url', sa.String(length=500), nullable=False, comment='头像链接'),
+    sa.Column('avatar_url', sa.String(length=500), nullable=True, comment='头像链接'),
     sa.Column('wechat_openid', sa.String(length=100), nullable=False, comment='微信openid'),
     sa.Column('wechat_union_id', sa.String(length=100), nullable=True, comment='微信unionid'),
     sa.Column('phone', sa.String(length=11), nullable=True, comment='手机号码'),
diff --git a/core/db/models.py b/core/db/models.py
index 9ac937c..bd96d47 100644
--- a/core/db/models.py
+++ b/core/db/models.py
@@ -69,7 +69,7 @@ class User(BaseModel, DateModel):
     )
     nickname: Mapped[str] = mapped_column(String(20), comment='昵称')
     gender: Mapped[int] = mapped_column(Integer, nullable=True, comment='性别')
-    avatar_url: Mapped[str] = mapped_column(String(500), comment='头像链接')
+    avatar_url: Mapped[str] = mapped_column(String(500), nullable=True, comment='头像链接')
     wechat_openid: Mapped[str] = mapped_column(String(100), comment='微信openid')
     wechat_union_id: Mapped[str] = mapped_column(String(100), nullable=True, comment='微信unionid')
     phone: Mapped[str] = mapped_column(String(11), nullable=True, comment='手机号码')