diff --git a/backend/app/agent/agent_service.py b/backend/app/agent/agent_service.py
index ad02087..9d0f59a 100644
--- a/backend/app/agent/agent_service.py
+++ b/backend/app/agent/agent_service.py
@@ -25,15 +25,24 @@ from ..main_graph.state import MainGraphState, CurrentAction
 def create_serde() -> JsonPlusSerializer:
     """创建带自定义类型注册的序列化器"""
     from backend.app.core.intent import ReasoningAction, RetrievalConfig, ReasoningResult
+    from backend.app.main_graph.state import (
+        CurrentAction, ErrorSeverity, ErrorRecord,
+        ReactReasoningState, HybridRouterState, FastPathState
+    )
+    from backend.app.main_graph.nodes.hybrid_router import HybridRouterResult
 
     return JsonPlusSerializer(
         allowed_msgpack_modules=[
-            ("app.core.intent", "ReasoningAction"),
-            ("app.core.intent", "RetrievalConfig"),
-            ("app.core.intent", "ReasoningResult"),
-            ("app.main_graph.state", "CurrentAction"),
-            ("app.main_graph.state", "ErrorSeverity"),
-            ("app.main_graph.state", "ErrorRecord"),
+            ("backend.app.core.intent", "ReasoningAction"),
+            ("backend.app.core.intent", "RetrievalConfig"),
+            ("backend.app.core.intent", "ReasoningResult"),
+            ("backend.app.main_graph.state", "CurrentAction"),
+            ("backend.app.main_graph.state", "ErrorSeverity"),
+            ("backend.app.main_graph.state", "ErrorRecord"),
+            ("backend.app.main_graph.state", "ReactReasoningState"),
+            ("backend.app.main_graph.state", "HybridRouterState"),
+            ("backend.app.main_graph.state", "FastPathState"),
+            ("backend.app.main_graph.nodes.hybrid_router", "HybridRouterResult"),
         ]
     )