diff --git a/longtasks/longtasks.py b/longtasks/longtasks.py
index fd8f38b..ba6b7ae 100644
--- a/longtasks/longtasks.py
+++ b/longtasks/longtasks.py
@@ -155,7 +155,7 @@ class LongTasks:
 
 				# 2) 执行任务（catch exceptions）
 				try:
-					result = await self.process_task(worker_id, payload)
+					result = await self.process_task(payload, worker_id)
 				except asyncio.CancelledError:
 					# 若希望支持取消，可把 status 设为 cancelling 等
 					await self.update_task_hash(task_id, {"status": "FAILED", "error": "cancelled"})
@@ -196,7 +196,7 @@ class LongTasks:
 			"task_id": taskid,
 			"status": "PENDING",
 			"created_at": time.time(),
-			"payload": json.dumps(payload)
+			"payload": payload
 		}
 		await self.set_redis_task(taskid, task_data)
 		await self.redis.rpush(self.task_queue, taskid)