diff --git a/backend/app/models/models.py b/backend/app/models/models.py
index d71d084..c77bc9d 100644
--- a/backend/app/models/models.py
+++ b/backend/app/models/models.py
@@ -271,11 +271,9 @@ class UserFeedback(Base):
     __tablename__ = "user_feedbacks"
     
     id = Column(Integer, primary_key=True, index=True)
-    ForeignKey("users.f99_90_id"), nullable=False)
-    user_id = Column(String, ForeignKey("users.f99_90_id"), nullable=False)
-    # 修正：users表的f99_90_id是varchar
+    user_id = Column(String(36), ForeignKey("users.f99_90_id"), nullable=False)
     content = Column(Text, nullable=False)
     contact = Column(String(100), default="")
-    status = Column(String(20), default="pending")  # pending, resolved
+    status = Column(String(20), default="pending")
     created_at = Column(DateTime, default=datetime.utcnow)