diff --git a/Common.py b/Common.py
index 5ffb686..7e136b5 100644
--- a/Common.py
+++ b/Common.py
@@ -261,7 +261,7 @@ def appendError(obj):
 
 def loginBilibili():
     res = b.login(config["b_u"], config["b_p"])
-    appendOperation("登陆账号，结果为：["+res+"]")
+    appendOperation("登陆账号，结果为：[{}]".format(res))
 
 
 class downloader(XiGuaLiveApi):