diff --git a/server/models/__init__.py b/server/models/__init__.py
index 860e5425..6bc7ffa6 100644
--- a/server/models/__init__.py
+++ b/server/models/__init__.py
@@ -1,3 +1,9 @@
 from sqlalchemy.ext.declarative import declarative_base
 
 Base = declarative_base()
+
+# 确保在创建表之前，所有模型都已被导入并注册到 Base.metadata
+# 这样在 DBManager.create_tables() 执行时，可以创建包括 thread 在内的所有表
+from server.models.user_model import User, OperationLog  # noqa: E402, F401
+from server.models.thread_model import Thread  # noqa: E402, F401
+from server.models.kb_models import KnowledgeDatabase, KnowledgeFile, KnowledgeNode  # noqa: E402, F401