diff --git a/src/Luban.Client/Source/Program.cs b/src/Luban.Client/Source/Program.cs
index ba9d68d..d52b04c 100644
--- a/src/Luban.Client/Source/Program.cs
+++ b/src/Luban.Client/Source/Program.cs
@@ -26,6 +26,8 @@ namespace Luban.Client
 
             public bool Verbose { get; set; }
 
+            public string LogLevel { get; set; } = "INFO";
+
             public string CacheMetaInfoFile { get; set; } = ".cache.meta";
 
             public string[] WatchDir { get; set; }
@@ -47,6 +49,7 @@ Options:
   -p  --port  <port>            port. default 8899
   -j  --job   <job>             Required. job type.  avaliable value: cfg
   -v  --verbose                 verbose print
+  -l  --loglevel <level>        log level. default INFO. avaliable value: TRACE,DEBUG,INFO,WARN,ERROR,FATAL,OFF
   -c  --cachemetafile <file>    cache meta file name. default is '.cache.meta'
   -w  --watch  <dir>            watch data change and regenerate.
   -h  --help            show usage
@@ -67,8 +70,16 @@ Options:
                         case "-h":
                         case "--host":
                         {
-
-                            ops.Host = args[++i];
+                            // 打个补丁。好多人忘了设置 LUBAN_SERVER_IP 环境变量，导致启动时出问题
+                            if (args[i + 1].StartsWith("-"))
+                            {
+                                Console.WriteLine("[WARN] --host (or -h) <LUBAN_SERVER_IP> argument is missing, use 127.0.0.1 as default. do you forget to set LUBAN_SERVER_IP env variable?");
+                                ops.Host = "127.0.0.1";
+                            }
+                            else
+                            {
+                                ops.Host = args[++i];
+                            }
                             break;
                         }
                         case "-p":
@@ -89,6 +100,12 @@ Options:
                             ops.Verbose = true;
                             break;
                         }
+                        case "-l":
+                        case "--loglevel":
+                        {
+                            ops.LogLevel = args[++i];
+                            break;
+                        }
                         case "-c":
                         case "--cachemetafile":
                         {
@@ -148,7 +165,7 @@ Options:
             CommandLineOptions options = parseResult.Item2;
 
             profile.StartPhase("init logger");
-            LogUtil.InitSimpleNLogConfigure(NLog.LogLevel.Info);
+            Luban.Common.Utils.LogUtil.InitSimpleNLogConfigure(NLog.LogLevel.FromString(options.LogLevel));
             s_logger = NLog.LogManager.GetCurrentClassLogger();
             profile.EndPhaseAndLog();
 
diff --git a/src/Luban.Common/Source/Utils/LogUtil.cs b/src/Luban.Common/Source/Utils/LogUtil.cs
index 3c99316..13420b1 100644
--- a/src/Luban.Common/Source/Utils/LogUtil.cs
+++ b/src/Luban.Common/Source/Utils/LogUtil.cs
@@ -5,8 +5,15 @@ namespace Luban.Common.Utils
         public static void InitSimpleNLogConfigure(NLog.LogLevel minConsoleLogLevel)
         {
             var logConfig = new NLog.Config.LoggingConfiguration();
-            //var layout = NLog.Layouts.Layout.FromString("${longdate}|${level:uppercase=true}|${threadid}|${message}${onexception:${newline}${exception:format=tostring}${exception:format=StackTrace}}");
-            var layout = NLog.Layouts.Layout.FromString("${longdate}|${message}${onexception:${newline}${exception:format=tostring}${exception:format=StackTrace}}");
+            NLog.Layouts.Layout layout;
+            if (minConsoleLogLevel <= NLog.LogLevel.Debug)
+            {
+                layout = NLog.Layouts.Layout.FromString("${longdate}|${level:uppercase=true}|${callsite}:${callsite-linenumber}|${message}${onexception:${newline}${exception:format=tostring}${exception:format=StackTrace}}");
+            }
+            else
+            {
+                layout = NLog.Layouts.Layout.FromString("${longdate}|${message}${onexception:${newline}${exception:format=tostring}${exception:format=StackTrace}}");
+            }
             logConfig.AddTarget("console", new NLog.Targets.ColoredConsoleTarget() { Layout = layout });
             logConfig.AddRule(minConsoleLogLevel, NLog.LogLevel.Fatal, "console");
             NLog.LogManager.Configuration = logConfig;
diff --git a/src/Luban.Server/Source/Program.cs b/src/Luban.Server/Source/Program.cs
index 68f7dff..6f8a56b 100644
--- a/src/Luban.Server/Source/Program.cs
+++ b/src/Luban.Server/Source/Program.cs
@@ -16,6 +16,9 @@ namespace Luban.Server
         {
             [Option('p', "port", Required = false, HelpText = "listen port")]
             public int Port { get; set; } = 8899;
+
+            [Option('l', "loglevel", Required = false, HelpText = "log level. default INFO. avaliable value: TRACE,DEBUG,INFO,WARN,ERROR,FATAL,OFF")]
+            public string LogLevel { get; set; } = "INFO";
         }
 
         private static CommandLineOptions ParseOptions(String[] args)
@@ -41,7 +44,7 @@ namespace Luban.Server
 
             var options = ParseOptions(args);
 
-            Luban.Common.Utils.LogUtil.InitSimpleNLogConfigure(NLog.LogLevel.Info);
+            Luban.Common.Utils.LogUtil.InitSimpleNLogConfigure(NLog.LogLevel.FromString(options.LogLevel));
 
             System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);