diff --git a/backend/app/core/__init__.py b/backend/app/core/__init__.py
index a9c3e65..29b0db8 100644
--- a/backend/app/core/__init__.py
+++ b/backend/app/core/__init__.py
@@ -1,7 +1,7 @@
 """核心模块 - 基类和通用工具"""
 
 from .formatter import MarkdownFormatter
-from .state_base import StateBase
+from .state_base import BaseState
 from .intent import (
     IntentType,
     IntentResult,
@@ -18,7 +18,7 @@ from .human_review import (
 
 __all__ = [
     "MarkdownFormatter",
-    "StateBase",
+    "BaseState",
     "IntentType",
     "IntentResult",
     "IntentClassifier",