diff --git a/src/routers/deep_agent_chat.py b/src/routers/deep_agent_chat.py
index 430b96d..d34e048 100644
--- a/src/routers/deep_agent_chat.py
+++ b/src/routers/deep_agent_chat.py
@@ -35,7 +35,6 @@ async def chat_stream(request: DeepAgentChatRequest):
     * `checkpoint_id`: (可选) 历史快照 ID。
     * `config_params`: (可选) 对话配置参数
     * `need_suggestion`: (可选) 是否需要建议按钮,需要建议的频率，0-1的浮点数
-    * `need_title`: (可选) 是否需要标题
     * `use_report`: (可选) 是否需要使用report功能 true/false
 
 
@@ -71,6 +70,10 @@ async def chat_stream(request: DeepAgentChatRequest):
 
     """
     logger.info(f"chat request data: {request}")
+    if request.thread_id:
+        need_title = False
+    else:
+        need_title = True
     source_thread_id = request.thread_id
     checkpoint_id = request.checkpoint_id
 
@@ -259,7 +262,7 @@ async def chat_stream(request: DeepAgentChatRequest):
             yield f"data: {json.dumps({'suggested_questions': suggested_questions}, ensure_ascii=False)}\n\n"
 
         # 获取标题
-        if request.need_title:
+        if need_title:
             title = await conversation_title(agent=main_agent, config=current_config)
             yield f"data: {json.dumps({'title': title}, ensure_ascii=False)}\n\n"
 
diff --git a/src/schemas/deep_agent_chat.py b/src/schemas/deep_agent_chat.py
index 0294b82..2ce5f86 100644
--- a/src/schemas/deep_agent_chat.py
+++ b/src/schemas/deep_agent_chat.py
@@ -15,7 +15,6 @@ class DeepAgentChatRequest(BaseModel):
     checkpoint_id: Optional[str] = Field(None, description="回溯点的ID，用于从历史点开启新对话")
     config_params: Optional[AgentConfig] = None
     need_suggestion: float = 0
-    need_title: bool = False
     use_report: bool = False  # ← 新增：是否使用深度报告