diff --git a/gradio_ui/app.py b/gradio_ui/app.py
index 63c83ea..c8b4a67 100644
--- a/gradio_ui/app.py
+++ b/gradio_ui/app.py
@@ -101,17 +101,11 @@ def process_input(user_input, state, vision_agent_state):
     )
     yield state['messages'] 
     agent = vision_agent_state["agent"]
-    for loop_msg in sampling_loop_sync(
+    for _ in sampling_loop_sync(
         model=state["model"],
         messages=state["messages"],
         vision_agent = agent
-    ):  
-        if loop_msg is None or state.get("stop"):
-            yield state['messages']
-            print("End of task. Close the loop.")
-            break
-            
-        yield state['messages']
+    ):  yield state['messages']
 
 def stop_app(state):
     state["stop"] = True
diff --git a/gradio_ui/loop.py b/gradio_ui/loop.py
index 62f1ae2..7cfd3b9 100644
--- a/gradio_ui/loop.py
+++ b/gradio_ui/loop.py
@@ -32,19 +32,22 @@ def sampling_loop_sync(
     task_plan_agent = TaskPlanAgent()
     executor = AnthropicExecutor()
     plan_list = task_plan_agent(messages=messages)
+    yield
     task_run_agent = TaskRunAgent()
     verification_agent = VerificationAgent()
     for plan in plan_list:      
-        yield execute_task_plan(plan, vision_agent, task_run_agent, executor, messages)
+        execute_task_plan(plan, vision_agent, task_run_agent, executor, messages)
+        yield
         sleep(2)
-        yield verification_loop(vision_agent, plan, verification_agent, executor, task_run_agent, messages)
+        verification_loop(vision_agent, plan, verification_agent, executor, task_run_agent, messages)
+        yield
 
 def verification_loop(vision_agent, plan, verification_agent, executor, task_run_agent, messages):
     """verification agent will be called in the loop"""
     while True:
         # 验证结果
         verification_result = verification_agent(plan["expected_result"], messages)
-        yield verification_result
+        yield
         # 如果验证成功，返回结果
         if verification_result["verification_status"] == "success":
             return