diff --git a/cli_demo.py b/cli_demo.py
index 7110196..ea5a895 100644
--- a/cli_demo.py
+++ b/cli_demo.py
@@ -18,7 +18,7 @@ if __name__ == "__main__":
     vs_path = None
     while not vs_path:
         filepath = input("Input your local knowledge file path 请输入本地知识文件路径：")
-        #判断filepath是否为空，如果为空的话，重新让用户输入,防止用户误触回车
+        # 判断 filepath 是否为空，如果为空的话，重新让用户输入,防止用户误触回车
         if not filepath:
             continue
         vs_path, _ = local_doc_qa.init_knowledge_vector_store(filepath)