diff --git a/pkg/base/model.go b/pkg/base/model.go
index d0630b8e..991d6c0e 100644
--- a/pkg/base/model.go
+++ b/pkg/base/model.go
@@ -168,6 +168,7 @@ func (cfg *DownloaderProxyConfig) ToHandler() func(r *http.Request) (*url.URL, e
 		return nil
 	}
 	if cfg.System {
+		ieproxy.ReloadConf()
 		return ieproxy.GetProxyFunc()
 	}
 	if cfg.Scheme == "" || cfg.Host == "" {
@@ -182,6 +183,7 @@ func (cfg *DownloaderProxyConfig) ToUrl() *url.URL {
 		return nil
 	}
 	if cfg.System {
+		ieproxy.ReloadConf()
 		static := ieproxy.GetConf().Static
 		if static.Active && len(static.Protocols) > 0 {
 			// If only one protocol, use it
diff --git a/ui/flutter/lib/api/model/downloader_config.dart b/ui/flutter/lib/api/model/downloader_config.dart
index 01c596cb..5cab5945 100644
--- a/ui/flutter/lib/api/model/downloader_config.dart
+++ b/ui/flutter/lib/api/model/downloader_config.dart
@@ -78,6 +78,7 @@ class ExtraConfig {
 @JsonSerializable()
 class ProxyConfig {
   bool enable;
+  bool system;
   String scheme;
   String host;
   String usr;
@@ -85,6 +86,7 @@ class ProxyConfig {
 
   ProxyConfig({
     this.enable = false,
+    this.system = false,
     this.scheme = '',
     this.host = '',
     this.usr = '',
diff --git a/ui/flutter/lib/api/model/downloader_config.g.dart b/ui/flutter/lib/api/model/downloader_config.g.dart
index 6cd41ae6..662ad483 100644
--- a/ui/flutter/lib/api/model/downloader_config.g.dart
+++ b/ui/flutter/lib/api/model/downloader_config.g.dart
@@ -9,7 +9,7 @@ part of 'downloader_config.dart';
 DownloaderConfig _$DownloaderConfigFromJson(Map<String, dynamic> json) =>
     DownloaderConfig(
       downloadDir: json['downloadDir'] as String? ?? '',
-      maxRunning: json['maxRunning'] as int? ?? 0,
+      maxRunning: (json['maxRunning'] as num?)?.toInt() ?? 0,
     )
       ..protocolConfig = ProtocolConfig.fromJson(
           json['protocolConfig'] as Map<String, dynamic>?)
@@ -39,7 +39,7 @@ Map<String, dynamic> _$ProtocolConfigToJson(ProtocolConfig instance) =>
 HttpConfig _$HttpConfigFromJson(Map<String, dynamic> json) => HttpConfig(
       userAgent: json['userAgent'] as String? ??
           'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36',
-      connections: json['connections'] as int? ?? 16,
+      connections: (json['connections'] as num?)?.toInt() ?? 16,
       useServerCtime: json['useServerCtime'] as bool? ?? false,
     );
 
@@ -51,7 +51,7 @@ Map<String, dynamic> _$HttpConfigToJson(HttpConfig instance) =>
     };
 
 BtConfig _$BtConfigFromJson(Map<String, dynamic> json) => BtConfig()
-  ..listenPort = json['listenPort'] as int
+  ..listenPort = (json['listenPort'] as num).toInt()
   ..trackers =
       (json['trackers'] as List<dynamic>).map((e) => e as String).toList();
 
@@ -74,6 +74,7 @@ Map<String, dynamic> _$ExtraConfigToJson(ExtraConfig instance) =>
 
 ProxyConfig _$ProxyConfigFromJson(Map<String, dynamic> json) => ProxyConfig(
       enable: json['enable'] as bool? ?? false,
+      system: json['system'] as bool? ?? false,
       scheme: json['scheme'] as String? ?? '',
       host: json['host'] as String? ?? '',
       usr: json['usr'] as String? ?? '',
@@ -83,6 +84,7 @@ ProxyConfig _$ProxyConfigFromJson(Map<String, dynamic> json) => ProxyConfig(
 Map<String, dynamic> _$ProxyConfigToJson(ProxyConfig instance) =>
     <String, dynamic>{
       'enable': instance.enable,
+      'system': instance.system,
       'scheme': instance.scheme,
       'host': instance.host,
       'usr': instance.usr,
diff --git a/ui/flutter/lib/api/model/options.g.dart b/ui/flutter/lib/api/model/options.g.dart
index b496e9fc..40a1a8a4 100644
--- a/ui/flutter/lib/api/model/options.g.dart
+++ b/ui/flutter/lib/api/model/options.g.dart
@@ -10,7 +10,7 @@ Options _$OptionsFromJson(Map<String, dynamic> json) => Options(
       name: json['name'] as String,
       path: json['path'] as String,
       selectFiles: (json['selectFiles'] as List<dynamic>?)
-              ?.map((e) => e as int)
+              ?.map((e) => (e as num).toInt())
               .toList() ??
           const [],
       extra: json['extra'],
@@ -35,7 +35,7 @@ Map<String, dynamic> _$OptionsToJson(Options instance) {
 
 OptsExtraHttp _$OptsExtraHttpFromJson(Map<String, dynamic> json) =>
     OptsExtraHttp()
-      ..connections = json['connections'] as int
+      ..connections = (json['connections'] as num).toInt()
       ..autoTorrent = json['autoTorrent'] as bool;
 
 Map<String, dynamic> _$OptsExtraHttpToJson(OptsExtraHttp instance) =>
diff --git a/ui/flutter/lib/api/model/resource.g.dart b/ui/flutter/lib/api/model/resource.g.dart
index 2feddd86..0a5e8fc8 100644
--- a/ui/flutter/lib/api/model/resource.g.dart
+++ b/ui/flutter/lib/api/model/resource.g.dart
@@ -8,7 +8,7 @@ part of 'resource.dart';
 
 Resource _$ResourceFromJson(Map<String, dynamic> json) => Resource(
       name: json['name'] as String? ?? "",
-      size: json['size'] as int? ?? 0,
+      size: (json['size'] as num?)?.toInt() ?? 0,
       range: json['range'] as bool? ?? false,
       files: (json['files'] as List<dynamic>)
           .map((e) => FileInfo.fromJson(e as Map<String, dynamic>))
@@ -27,7 +27,7 @@ Map<String, dynamic> _$ResourceToJson(Resource instance) => <String, dynamic>{
 FileInfo _$FileInfoFromJson(Map<String, dynamic> json) => FileInfo(
       path: json['path'] as String? ?? "",
       name: json['name'] as String,
-      size: json['size'] as int? ?? 0,
+      size: (json['size'] as num?)?.toInt() ?? 0,
       req: json['req'] == null
           ? null
           : Request.fromJson(json['req'] as Map<String, dynamic>),
diff --git a/ui/flutter/lib/api/model/result.g.dart b/ui/flutter/lib/api/model/result.g.dart
index 452a7c7c..03d4f734 100644
--- a/ui/flutter/lib/api/model/result.g.dart
+++ b/ui/flutter/lib/api/model/result.g.dart
@@ -11,7 +11,7 @@ Result<T> _$ResultFromJson<T>(
   T Function(Object? json) fromJsonT,
 ) =>
     Result<T>(
-      code: json['code'] as int,
+      code: (json['code'] as num).toInt(),
       msg: json['msg'] as String?,
       data: _$nullableGenericFromJson(json['data'], fromJsonT),
     );
diff --git a/ui/flutter/lib/api/model/task.g.dart b/ui/flutter/lib/api/model/task.g.dart
index b5974a16..c0a77b95 100644
--- a/ui/flutter/lib/api/model/task.g.dart
+++ b/ui/flutter/lib/api/model/task.g.dart
@@ -34,9 +34,9 @@ const _$StatusEnumMap = {
 };
 
 Progress _$ProgressFromJson(Map<String, dynamic> json) => Progress(
-      used: json['used'] as int,
-      speed: json['speed'] as int,
-      downloaded: json['downloaded'] as int,
+      used: (json['used'] as num).toInt(),
+      speed: (json['speed'] as num).toInt(),
+      downloaded: (json['downloaded'] as num).toInt(),
     );
 
 Map<String, dynamic> _$ProgressToJson(Progress instance) => <String, dynamic>{
diff --git a/ui/flutter/lib/app/modules/setting/views/setting_view.dart b/ui/flutter/lib/app/modules/setting/views/setting_view.dart
index 0340da0e..02bfbbbd 100644
--- a/ui/flutter/lib/app/modules/setting/views/setting_view.dart
+++ b/ui/flutter/lib/app/modules/setting/views/setting_view.dart
@@ -7,6 +7,7 @@ import 'package:get/get.dart';
 import 'package:intl/intl.dart';
 import 'package:url_launcher/url_launcher.dart';
 
+import '../../../../api/model/downloader_config.dart';
 import '../../../../i18n/message.dart';
 import '../../../../util/input_formatter.dart';
 import '../../../../util/locale_manager.dart';
@@ -408,29 +409,53 @@ class SettingView extends GetView<SettingController> {
     }
 
     // advanced config proxy items start
+    final proxy = downloaderCfg.value.proxy;
     final buildProxy = _buildConfigItem(
       'proxy',
-      () => downloaderCfg.value.proxy.enable
-          ? '${downloaderCfg.value.proxy.scheme}://${downloaderCfg.value.proxy.host}'
-          : 'notSet'.tr,
+      () {
+        switch (proxy.proxyMode) {
+          case ProxyModeEnum.noProxy:
+            return 'noProxy'.tr;
+          case ProxyModeEnum.systemProxy:
+            return 'systemProxy'.tr;
+          case ProxyModeEnum.customProxy:
+            return '${downloaderCfg.value.proxy.scheme}://${downloaderCfg.value.proxy.host}';
+        }
+      },
       (Key key) {
-        final proxy = downloaderCfg.value.proxy;
+        final mode = SizedBox(
+          width: 150,
+          child: DropdownButtonFormField<ProxyModeEnum>(
+            value: proxy.proxyMode,
+            onChanged: (value) async {
+              if (value != null && value != proxy.proxyMode) {
+                proxy.proxyMode = value;
+                downloaderCfg.update((val) {
+                  val!.proxy = proxy;
+                });
 
-        final switcher = Switch(
-          value: proxy.enable,
-          onChanged: (bool value) async {
-            if (value != proxy.enable) {
-              downloaderCfg.update((val) {
-                val!.proxy.enable = value;
-              });
-
-              await debounceSave();
-            }
-          },
+                await debounceSave();
+              }
+            },
+            items: [
+              DropdownMenuItem<ProxyModeEnum>(
+                value: ProxyModeEnum.noProxy,
+                child: Text('noProxy'.tr),
+              ),
+              DropdownMenuItem<ProxyModeEnum>(
+                value: ProxyModeEnum.systemProxy,
+                child: Text('systemProxy'.tr),
+              ),
+              DropdownMenuItem<ProxyModeEnum>(
+                value: ProxyModeEnum.customProxy,
+                child: Text('customProxy'.tr),
+              ),
+            ],
+          ),
         );
 
         final scheme = SizedBox(
-          width: 100,
+          width: 150,
           child: DropdownButtonFormField<String>(
             value: proxy.scheme,
             onChanged: (value) async {
@@ -478,7 +503,7 @@ class SettingView extends GetView<SettingController> {
 
         ipController.addListener(updateAddress);
         portController.addListener(updateAddress);
-        final server = [
+        final server = Row(children: [
           Flexible(
             child: TextFormField(
               controller: ipController,
@@ -503,12 +528,12 @@ class SettingView extends GetView<SettingController> {
               ],
             ),
           ),
-        ];
+        ]);
 
         final usrController = TextEditingController(text: proxy.usr);
         final pwdController = TextEditingController(text: proxy.pwd);
 
-        final auth = [
+        final auth = Row(children: [
           Flexible(
             child: TextFormField(
               controller: usrController,
@@ -528,20 +553,21 @@ class SettingView extends GetView<SettingController> {
               ),
             ),
           ),
-        ];
+        ]);
+
+        List<Widget> customView() {
+          if (proxy.proxyMode != ProxyModeEnum.customProxy) {
+            return [];
+          }
+          return [scheme, server, auth];
+        }
 
         return Form(
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: _addPadding([
-              switcher,
-              scheme,
-              Row(
-                children: server,
-              ),
-              Row(
-                children: auth,
-              ),
+              mode,
+              ...customView(),
             ]),
           ),
         );
@@ -857,3 +883,37 @@ class SettingView extends GetView<SettingController> {
     }
   }
 }
+
+enum ProxyModeEnum {
+  noProxy,
+  systemProxy,
+  customProxy,
+}
+
+extension ProxyMode on ProxyConfig {
+  ProxyModeEnum get proxyMode {
+    if (!enable) {
+      return ProxyModeEnum.noProxy;
+    }
+    if (system) {
+      return ProxyModeEnum.systemProxy;
+    }
+    return ProxyModeEnum.customProxy;
+  }
+
+  set proxyMode(ProxyModeEnum value) {
+    switch (value) {
+      case ProxyModeEnum.noProxy:
+        enable = false;
+        break;
+      case ProxyModeEnum.systemProxy:
+        enable = true;
+        system = true;
+        break;
+      case ProxyModeEnum.customProxy:
+        enable = true;
+        system = false;
+        break;
+    }
+  }
+}
diff --git a/ui/flutter/lib/core/common/start_config.g.dart b/ui/flutter/lib/core/common/start_config.g.dart
index 8732accb..85e67b85 100644
--- a/ui/flutter/lib/core/common/start_config.g.dart
+++ b/ui/flutter/lib/core/common/start_config.g.dart
@@ -11,7 +11,7 @@ StartConfig _$StartConfigFromJson(Map<String, dynamic> json) => StartConfig()
   ..address = json['address'] as String
   ..storage = json['storage'] as String
   ..storageDir = json['storageDir'] as String
-  ..refreshInterval = json['refreshInterval'] as int
+  ..refreshInterval = (json['refreshInterval'] as num).toInt()
   ..apiToken = json['apiToken'] as String;
 
 Map<String, dynamic> _$StartConfigToJson(StartConfig instance) =>
diff --git a/ui/flutter/lib/i18n/langs/en_us.dart b/ui/flutter/lib/i18n/langs/en_us.dart
index 0c64beb5..22aa8a75 100644
--- a/ui/flutter/lib/i18n/langs/en_us.dart
+++ b/ui/flutter/lib/i18n/langs/en_us.dart
@@ -82,6 +82,9 @@ const enUS = {
     'serviceText': 'Running',
     'network': 'Network',
     'proxy': 'Proxy',
+    'noProxy': 'No Proxy',
+    'systemProxy': 'System Proxy',
+    'customProxy': 'Custom Proxy',
     'server': 'Server',
     'username': 'Username',
     'password': 'Password',
diff --git a/ui/flutter/lib/i18n/langs/zh_cn.dart b/ui/flutter/lib/i18n/langs/zh_cn.dart
index a18de6a0..188d3eab 100644
--- a/ui/flutter/lib/i18n/langs/zh_cn.dart
+++ b/ui/flutter/lib/i18n/langs/zh_cn.dart
@@ -80,6 +80,9 @@ const zhCN = {
     'serviceText': '运行中',
     'network': '网络',
     'proxy': '代理',
+    'noProxy': '不使用代理',
+    'systemProxy': '系统代理',
+    'customProxy': '自定义代理',
     'server': '服务器',
     'username': '用户名',
     'password': '密码',
diff --git a/ui/flutter/lib/i18n/langs/zh_tw.dart b/ui/flutter/lib/i18n/langs/zh_tw.dart
index 30c6ff66..044227f2 100644
--- a/ui/flutter/lib/i18n/langs/zh_tw.dart
+++ b/ui/flutter/lib/i18n/langs/zh_tw.dart
@@ -80,6 +80,9 @@ const zhTW = {
     'serviceText': '執行中',
     'network': '網路',
     'proxy': '代理',
+    'noProxy': '不使用代理',
+    'systemProxy': '系統代理',
+    'customProxy': '自定義代理',
     'server': '伺服器',
     'username': '名稱',
     'password': '密碼',