diff --git a/websocietysimulator/simulator.py b/websocietysimulator/simulator.py
index b6e4890..0df2bf9 100644
--- a/websocietysimulator/simulator.py
+++ b/websocietysimulator/simulator.py
@@ -179,13 +179,18 @@ def run_simulation(self, number_of_tasks: int = None, enable_threading: bool = F
                 logger.info(f"Simulation finished for task {index}")
         else:
             # 多线程处理
-            from threading import Lock
-
+            from threading import Lock, Event
+            
             log_lock = Lock()
+            cancel_event = Event()  # 添加取消事件标志
             self.simulation_outputs = [None] * len(task_to_run)
 
             def process_task(task_index_tuple):
                 index, task = task_index_tuple
+                # 检查是否已经被要求取消
+                if cancel_event.is_set():
+                    return index, None
+                    
                 if isinstance(self.llm, list):
                     agent = self.agent_class(llm=self.llm[index%len(self.llm)])
                 else:
@@ -194,6 +199,10 @@ def process_task(task_index_tuple):
                 agent.insert_task(task)
                 
                 try:
+                    # 定期检查是否需要取消
+                    if cancel_event.is_set():
+                        return index, None
+                        
                     output = agent.workflow()
                     result = {
                         "task": task.to_dict(),
@@ -204,11 +213,12 @@ def process_task(task_index_tuple):
                         "task": task.to_dict(),
                         "error": "Forward method not implemented by participant."
                     }
+                except Exception as e:
+                    return index, None
                 
                 with log_lock:
                     logger.info(f"Simulation finished for task {index}")
                 
-                self.simulation_outputs[index] = result
                 return index, result
 
             # 确定线程数
@@ -220,14 +230,12 @@ def process_task(task_index_tuple):
             logger.info(f"Running with {max_workers} threads")
             
             with ThreadPoolExecutor(max_workers=max_workers) as executor:
-                # 提交所有任务
                 future_to_index = {
                     executor.submit(process_task, (i, task)): i 
                     for i, task in enumerate(task_to_run)
                 }
 
                 try:
-                    # 等待所有任务完成或达到时间限制
                     for future in as_completed(future_to_index, timeout=timeout_seconds):
                         try:
                             index, result = future.result()
@@ -236,6 +244,14 @@ def process_task(task_index_tuple):
                             logger.error(f"Task failed with error: {str(e)}")
                 except TimeoutError:
                     logger.error(f"Time limit ({time_limitation} minutes) reached.")
+                    # 设置取消标志
+                    cancel_event.set()
+                    # 强制取消所有任务
+                    for future in future_to_index:
+                        future.cancel()
+                    # 立即关闭执行器，不等待任务完成
+                    executor._threads.clear()
+                    executor.shutdown(wait=False)
                     raise TimeoutError
 
         logger.info("Simulation finished")