diff --git a/metagpt/llm.py b/metagpt/llm.py
index a94f6f7e9..68945e71e 100644
--- a/metagpt/llm.py
+++ b/metagpt/llm.py
@@ -10,7 +10,7 @@ from metagpt.provider.anthropic_api import Claude2 as Claude
 from metagpt.provider.openai_api import OpenAIGPTAPI as LLM
 from metagpt.provider.spark_api import Spark
 
-DEFAULT_LLM = LLM()
+DEFAULT_LLM = Spark()
 
 async def ai_func(prompt):
     """使用LLM进行QA
diff --git a/metagpt/provider/spark_api.py b/metagpt/provider/spark_api.py
index 2f75208c8..e855e019a 100644
--- a/metagpt/provider/spark_api.py
+++ b/metagpt/provider/spark_api.py
@@ -41,6 +41,7 @@ class Spark:
 
     def _default_system_msg(self):
         return self._system_msg(self.system_prompt)
+    
     def ask(self, msg: str):
         message = [self._user_msg(msg)]
         SparkApi.main(CONFIG.xinghuo_appid,CONFIG.xinghuo_api_key,CONFIG.xinghuo_api_secret,"ws://spark-api.xf-yun.com/v2.1/chat","generalv2",message)