diff --git a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
index a98a42f5df..6c768fd86c 100644
--- a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
+++ b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
@@ -455,8 +455,6 @@ class EasyUIBasedGenerateTaskPipeline(BasedGenerateTaskPipeline, MessageCycleMan
         agent_thought: Optional[MessageAgentThought] = (
             db.session.query(MessageAgentThought).filter(MessageAgentThought.id == event.agent_thought_id).first()
         )
-        db.session.refresh(agent_thought)
-        db.session.close()
 
         if agent_thought:
             return AgentThoughtStreamResponse(