diff --git a/backend/app/main_graph/utils/main_graph_builder.py b/backend/app/main_graph/utils/main_graph_builder.py
index 7c64f94..399098f 100644
--- a/backend/app/main_graph/utils/main_graph_builder.py
+++ b/backend/app/main_graph/utils/main_graph_builder.py
@@ -235,16 +235,14 @@ def build_react_main_graph(llm=None, tools=None, mem0_client=None) -> StateGraph
         }
     )
 
-    # 循环边（rag、web_search、error 回到 reason）
+    # 循环边（rag、web_search、子图、error都回到reason）
     graph.add_edge("rag_retrieve", "react_reason")
     graph.add_edge("web_search", "react_reason")
+    graph.add_edge("contact_subgraph", "react_reason")
+    graph.add_edge("dictionary_subgraph", "react_reason")
+    graph.add_edge("news_analysis_subgraph", "react_reason")
     graph.add_edge("handle_error", "react_reason")
     
-    # 关键修改：子图执行完后直接去 finalize（避免循环）
-    graph.add_edge("contact_subgraph", "finalize")
-    graph.add_edge("dictionary_subgraph", "finalize")
-    graph.add_edge("news_analysis_subgraph", "finalize")
-    
     # 第三阶段：llm_call 后进入完成处理
     if llm_node is not None:
         if summarize_node: