diff --git a/CRSim.Core/Converters/TimeSpanConverter.cs b/CRSim.Core/Converters/TimeSpanConverter.cs
deleted file mode 100644
index 2f38646..0000000
--- a/CRSim.Core/Converters/TimeSpanConverter.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Text.Json.Serialization;
-using System.Text.Json;
-using System.Threading.Tasks;
-
-namespace CRSim.Core.Converters
-{
-    public class TimeSpanConverter : JsonConverter<TimeSpan>
-    {
-        public override void Write(Utf8JsonWriter writer, TimeSpan value, JsonSerializerOptions options)
-        {
-            writer.WriteNumberValue(value.TotalMinutes); // 以分钟为单位进行序列化
-        }
-
-        // 反序列化：将数值转换回 TimeSpan 类型
-        public override TimeSpan Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            // 这里假设 JSON 存储的是分钟的数值
-            double minutes = reader.GetDouble();
-            return TimeSpan.FromMinutes(minutes);
-        }
-    }
-}
diff --git a/CRSim.Core/Models/Settings.cs b/CRSim.Core/Models/Settings.cs
index 2bfe991..62c45c6 100644
--- a/CRSim.Core/Models/Settings.cs
+++ b/CRSim.Core/Models/Settings.cs
@@ -5,22 +5,17 @@ namespace CRSim.Core.Models
 {
     public class Settings
     {
-        [JsonConverter(typeof(TimeSpanConverter))]
         public TimeSpan TimeOffset { get; set; } = TimeSpan.Zero;
 
-        [JsonConverter(typeof(TimeSpanConverter))]
         public TimeSpan DepartureCheckInAdvanceDuration { get; set; } = TimeSpan.FromMinutes(20);
 
-        [JsonConverter(typeof(TimeSpanConverter))]
         public TimeSpan PassingCheckInAdvanceDuration { get; set; } = TimeSpan.FromMinutes(10);
 
         /// <summary>
         /// 直到发车前多久停止显示
         /// </summary>
-        [JsonConverter(typeof(TimeSpanConverter))]
         public TimeSpan StopDisplayUntilDepartureDuration { get; set; } = TimeSpan.FromMinutes(1);
 
-        [JsonConverter(typeof(TimeSpanConverter))]
         public TimeSpan StopCheckInAdvanceDuration { get; set; } = TimeSpan.FromMinutes(2);
 
         public int MaxPages { get; set; } = 3;
diff --git a/CRSim.Core/Services/SettingsService.cs b/CRSim.Core/Services/SettingsService.cs
index d34e43a..7d436a4 100644
--- a/CRSim.Core/Services/SettingsService.cs
+++ b/CRSim.Core/Services/SettingsService.cs
@@ -1,38 +1,46 @@
 using CRSim.Core.Models;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
+using Microsoft.Win32;
 using System.Text.Json;
-using System.Threading.Tasks;
 
 namespace CRSim.Core.Services
 {
     public class SettingsService : ISettingsService
     {
-        private readonly string _settingsFilePath;
         private Settings _settings;
-        private readonly JsonSerializerOptions options = new() { WriteIndented = true };
-        public SettingsService(string settingsFilePath)
+        private RegistryKey _key = Registry.CurrentUser.OpenSubKey(@"Software\CRSim\Settings",true);
+        public SettingsService()
         {
-            _settingsFilePath = settingsFilePath;
             LoadSettings();
         }
         public void SaveSettings()
         {
-            string jsonString = JsonSerializer.Serialize(_settings, options);
-            File.WriteAllText(_settingsFilePath, jsonString);
+            _key.SetValue("TimeOffset", (int)_settings.TimeOffset.TotalMinutes);
+            _key.SetValue("SwitchPageSeconds", _settings.SwitchPageSeconds);
+            _key.SetValue("MaxPages", _settings.MaxPages);
+            _key.SetValue("StopCheckInAdvanceDuration", (int)_settings.StopCheckInAdvanceDuration.TotalMinutes);
+            _key.SetValue("StopDisplayUntilDepartureDuration", (int)_settings.StopDisplayUntilDepartureDuration.TotalMinutes);
+            _key.SetValue("PassingCheckInAdvanceDuration", (int)_settings.PassingCheckInAdvanceDuration.TotalMinutes);
+            _key.SetValue("DepartureCheckInAdvanceDuration", (int)_settings.DepartureCheckInAdvanceDuration.TotalMinutes);
         }
         private void LoadSettings()
         {
-            if (File.Exists(_settingsFilePath))
+            if (_key==null)
             {
-                string jsonString = File.ReadAllText(_settingsFilePath);
-                _settings = JsonSerializer.Deserialize<Settings>(jsonString);
+                Registry.CurrentUser.CreateSubKey(@"Software\CRSim\Settings");
+                _key = Registry.CurrentUser.OpenSubKey(@"Software\CRSim\Settings",true);
+                _settings = new Settings();
+                SaveSettings();
             }
             else
             {
                 _settings = new Settings();
+                _settings.TimeOffset = TimeSpan.FromMinutes((int)_key.GetValue("TimeOffset"));
+                _settings.SwitchPageSeconds = (int)_key.GetValue("SwitchPageSeconds");
+                _settings.MaxPages = (int)_key.GetValue("MaxPages");
+                _settings.StopCheckInAdvanceDuration = TimeSpan.FromMinutes((int)_key.GetValue("StopCheckInAdvanceDuration"));
+                _settings.StopDisplayUntilDepartureDuration = TimeSpan.FromMinutes((int)_key.GetValue("StopDisplayUntilDepartureDuration"));
+                _settings.PassingCheckInAdvanceDuration = TimeSpan.FromMinutes((int)_key.GetValue("PassingCheckInAdvanceDuration"));
+                _settings.DepartureCheckInAdvanceDuration = TimeSpan.FromMinutes((int)_key.GetValue("DepartureCheckInAdvanceDuration"));
             }
         }
 
diff --git a/CRSim/App.xaml.cs b/CRSim/App.xaml.cs
index 0b737d0..c55055e 100644
--- a/CRSim/App.xaml.cs
+++ b/CRSim/App.xaml.cs
@@ -8,7 +8,7 @@
         private static readonly IHost _host = Host.CreateDefaultBuilder()
             .ConfigureServices((context, services) =>
             {
-                services.AddSingleton<ISettingsService,SettingsService>(sp => new SettingsService("app.config"));
+                services.AddSingleton<ISettingsService,SettingsService>();
                 services.AddSingleton<ITimeService, TimeService>();
                 services.AddSingleton<INavigationService, NavigationService>();
                 services.AddSingleton<IDialogService, DialogService>();
diff --git a/CRSim/CRSim.csproj b/CRSim/CRSim.csproj
index d7cea1b..9b905ea 100644
--- a/CRSim/CRSim.csproj
+++ b/CRSim/CRSim.csproj
@@ -9,7 +9,7 @@
     <LangVersion>13.0</LangVersion>
     <StartupObject>CRSim.App</StartupObject>
     <ApplicationIcon>Assets\CRSimIcon.ico</ApplicationIcon>
-    <Version>1.2.4.0</Version>
+    <Version>1.2.5.0</Version>
   </PropertyGroup>
 
 	<ItemGroup>