diff --git a/MainWindow.cs b/MainWindow.cs
index 7f0d5b8..7ff5e65 100644
--- a/MainWindow.cs
+++ b/MainWindow.cs
@@ -49,7 +49,7 @@ namespace AntdUIDemo
         {
             // 读取 appsettings.json 文件
             var appSettings = ConfigurationHelper.GetAppSettings();
-
+            if (appSettings == null) return;
             // 加载色彩模式
             var value = appSettings["ColorMode"]?.ToString();
             if (value == "Auto")
@@ -86,6 +86,7 @@ namespace AntdUIDemo
         {
             // 读取 appsettings.json 文件
             var appSettings = ConfigurationHelper.GetAppSettings();
+            if (appSettings == null) return;
             var value = appSettings["ColorMode"]?.ToString();
             if (value == "Auto")
             {
diff --git a/Utils/ConfigurationHelper.cs b/Utils/ConfigurationHelper.cs
index 3a251cd..bd4e982 100644
--- a/Utils/ConfigurationHelper.cs
+++ b/Utils/ConfigurationHelper.cs
@@ -12,6 +12,10 @@ namespace AntdUIDemo.Utils
     {
         public static JObject GetAppSettings(string configFilePath = "appsettings.json")
         {
+            if (!File.Exists(configFilePath))
+            {
+                return null;
+            }
             // Read the JSON file
             var json = File.ReadAllText(configFilePath);