diff --git a/lib/common/conf/binary_conf.dart b/lib/common/conf/binary_conf.dart
index 56c7fd3..96025ed 100644
--- a/lib/common/conf/binary_conf.dart
+++ b/lib/common/conf/binary_conf.dart
@@ -10,9 +10,10 @@ class BinaryModuleConf {
     "aria2c": "0",
   };
 
-  static Future extractModel() async {
+  static Future extractModule(List<String> modules) async {
     final workingDir = "${AppConf.applicationSupportDir}\\modules";
     for (var m in _modules.entries) {
+      if (!modules.contains(m.key)) continue;
       final name = m.key;
       final version = m.value;
       final dir = "$workingDir\\$name";
diff --git a/lib/common/io/aria2c.dart b/lib/common/io/aria2c.dart
index 259b8f5..874e011 100644
--- a/lib/common/io/aria2c.dart
+++ b/lib/common/io/aria2c.dart
@@ -5,36 +5,46 @@ import 'package:aria2/aria2.dart';
 import 'package:flutter/foundation.dart';
 import 'package:starcitizen_doctor/base/ui.dart';
 import 'package:starcitizen_doctor/common/conf/app_conf.dart';
+import 'package:starcitizen_doctor/common/conf/binary_conf.dart';
 import 'package:starcitizen_doctor/common/helper/system_helper.dart';
 
 class Aria2cManager {
-  static bool _isDaemonRunning = false;
+  static int? _daemonPID;
 
   static final String _aria2cDir =
       "${AppConf.applicationSupportDir}\\modules\\aria2c";
 
   static Aria2c? _aria2c;
 
-  static Aria2c get aria2c {
-    if (!_isDaemonRunning) throw Exception("Aria2c Daemon not running!");
-    if (_aria2c == null) {
-      _aria2c = Aria2c(
-          "ws://127.0.0.1:64664/jsonrpc", "websocket", "ScToolbox_64664");
-      _aria2c!.getVersion().then((value) {
-        dPrint("Aria2cManager.connected!  version == ${value.version}");
-      });
+  static Aria2c getClient() {
+    if (_aria2c != null) return _aria2c!;
+    throw "not connect!";
+  }
+
+  static bool get isAvailable => _daemonPID != null && _aria2c != null;
+
+  static Future checkLazyLoad() async {
+    try {
+      final sessionFile = File("$_aria2cDir\\aria2.session");
+      // 有下载任务则第一时间初始化
+      if (await sessionFile.exists() &&
+          (await sessionFile.readAsString()).trim().isNotEmpty) {
+        await launchDaemon();
+      }
+    } catch (e) {
+      dPrint("Aria2cManager.checkLazyLoad Error:$e");
     }
-    return _aria2c!;
   }
 
   static Future launchDaemon() async {
-    if (_isDaemonRunning) return;
+    if (_daemonPID != null) return;
+    await BinaryModuleConf.extractModule(["aria2c"]);
 
     /// skip for debug hot reload
     if (kDebugMode) {
       if ((await SystemHelper.getPID("aria2c")).isNotEmpty) {
         dPrint("[Aria2cManager] debug skip for hot reload");
-        _isDaemonRunning = true;
+        _daemonPID = 0;
         return;
       }
     }
@@ -69,21 +79,26 @@ class Aria2cManager {
       if (event.trim().isEmpty) return;
       dPrint("[aria2c]: ${event.trim()}");
       if (event.contains("IPv4 RPC: listening on TCP port")) {
-        _isDaemonRunning = true;
-        aria2c;
+        _daemonPID = p.pid;
+        _aria2c = Aria2c(
+            "ws://127.0.0.1:64664/jsonrpc", "websocket", "ScToolbox_64664");
+        _aria2c!.getVersion().then((value) {
+          dPrint("Aria2cManager.connected!  version == ${value.version}");
+        });
       }
     }, onDone: () {
       dPrint("[aria2c] onDone: ");
-      _isDaemonRunning = false;
+      _daemonPID = null;
     }, onError: (e) {
       dPrint("[aria2c] stdout ERROR: $e");
-      _isDaemonRunning = false;
+      _daemonPID = null;
     });
+    p.pid;
     p.stderr.transform(utf8.decoder).listen((event) {
       dPrint("[aria2c] stderr ERROR : $event");
     });
     while (true) {
-      if (_isDaemonRunning) return;
+      if (_daemonPID != null) return;
       await Future.delayed(const Duration(milliseconds: 100));
     }
   }
diff --git a/lib/ui/home/downloads/downloads_ui_model.dart b/lib/ui/home/downloads/downloads_ui_model.dart
index 9481af8..388d9d0 100644
--- a/lib/ui/home/downloads/downloads_ui_model.dart
+++ b/lib/ui/home/downloads/downloads_ui_model.dart
@@ -37,18 +37,22 @@ class DownloadsUIModel extends BaseUIModel {
   onTapButton(String key) async {
     switch (key) {
       case "pause_all":
-        await Aria2cManager.aria2c.pauseAll();
+        if (!Aria2cManager.isAvailable) return;
+        await Aria2cManager.getClient().pauseAll();
         return;
       case "resume_all":
-        await Aria2cManager.aria2c.unpauseAll();
+        if (!Aria2cManager.isAvailable) return;
+
+        await Aria2cManager.getClient().unpauseAll();
         return;
       case "cancel_all":
         final userOK = await showConfirmDialogs(
             context!, "确认取消全部任务？", const Text("如果文件不再需要，你可能需要手动删除下载文件。"));
         if (userOK == true) {
+          if (!Aria2cManager.isAvailable) return;
           try {
             for (var value in [...tasks, ...waitingTasks]) {
-              await Aria2cManager.aria2c.remove(value.gid!);
+              await Aria2cManager.getClient().remove(value.gid!);
             }
           } catch (e) {
             dPrint("DownloadsUIModel cancel_all Error:  $e");
@@ -65,12 +69,15 @@ class DownloadsUIModel extends BaseUIModel {
     try {
       while (true) {
         if (!mounted) return;
-        tasks.clear();
-        tasks = await Aria2cManager.aria2c.tellActive();
-        waitingTasks = await Aria2cManager.aria2c.tellWaiting(0, 1000000);
-        stoppedTasks = await Aria2cManager.aria2c.tellStopped(0, 1000000);
-        globalStat = await Aria2cManager.aria2c.getGlobalStat();
-        notifyListeners();
+        if (Aria2cManager.isAvailable) {
+          final aria2c = Aria2cManager.getClient();
+          tasks.clear();
+          tasks = await aria2c.tellActive();
+          waitingTasks = await aria2c.tellWaiting(0, 1000000);
+          stoppedTasks = await aria2c.tellStopped(0, 1000000);
+          globalStat = await aria2c.getGlobalStat();
+          notifyListeners();
+        }
         await Future.delayed(const Duration(seconds: 1));
       }
     } catch (e) {
@@ -136,14 +143,17 @@ class DownloadsUIModel extends BaseUIModel {
   }
 
   Future<void> resumeTask(String? gid) async {
+    final aria2c = Aria2cManager.getClient();
     if (gid != null) {
-      await Aria2cManager.aria2c.unpause(gid);
+      await aria2c.unpause(gid);
     }
   }
 
   Future<void> pauseTask(String? gid) async {
+    final aria2c = Aria2cManager.getClient();
+
     if (gid != null) {
-      await Aria2cManager.aria2c.pause(gid);
+      await aria2c.pause(gid);
     }
   }
 
@@ -153,7 +163,8 @@ class DownloadsUIModel extends BaseUIModel {
       final ok = await showConfirmDialogs(
           context!, "确认取消下载？", const Text("如果文件不再需要，你可能需要手动删除下载文件。"));
       if (ok == true) {
-        await Aria2cManager.aria2c.remove(gid);
+        final aria2c = Aria2cManager.getClient();
+        await aria2c.remove(gid);
       }
     }
   }
@@ -220,12 +231,13 @@ class DownloadsUIModel extends BaseUIModel {
           ],
         ));
     if (ok == true) {
+      await handleError(() => Aria2cManager.launchDaemon());
+      final aria2c = Aria2cManager.getClient();
       final upByte = Aria2cManager.textToByte(upCtrl.text.trim());
       final downByte = Aria2cManager.textToByte(downCtrl.text.trim());
-      final r = await handleError(
-          () => Aria2cManager.aria2c.changeGlobalOption(Aria2Option()
-            ..maxOverallUploadLimit = upByte
-            ..maxOverallDownloadLimit = downByte));
+      final r = await handleError(() => aria2c.changeGlobalOption(Aria2Option()
+        ..maxOverallUploadLimit = upByte
+        ..maxOverallDownloadLimit = downByte));
       if (r != null) {
         await box.put('downloader_up_limit', upCtrl.text.trim());
         await box.put('downloader_down_limit', downCtrl.text.trim());
diff --git a/lib/ui/index_ui_model.dart b/lib/ui/index_ui_model.dart
index 34452b6..8d724f0 100644
--- a/lib/ui/index_ui_model.dart
+++ b/lib/ui/index_ui_model.dart
@@ -108,13 +108,17 @@ class IndexUIModel extends BaseUIModel {
 
   void _listenAria2c() async {
     while (true) {
+      if (!mounted) return;
       try {
-        aria2globalStat = await Aria2cManager.aria2c.getGlobalStat();
-        notifyListeners();
+        if (Aria2cManager.isAvailable) {
+          final aria2c = Aria2cManager.getClient();
+          aria2globalStat = await aria2c.getGlobalStat();
+          notifyListeners();
+        }
       } catch (e) {
         dPrint("aria2globalStat update error:$e");
       }
-      await Future.delayed(const Duration(seconds: 10));
+      await Future.delayed(const Duration(seconds: 5));
     }
   }
 }
diff --git a/lib/ui/splash_ui_model.dart b/lib/ui/splash_ui_model.dart
index 7311f0c..5bc6e6f 100644
--- a/lib/ui/splash_ui_model.dart
+++ b/lib/ui/splash_ui_model.dart
@@ -1,6 +1,5 @@
 import 'package:starcitizen_doctor/api/analytics.dart';
 import 'package:starcitizen_doctor/base/ui_model.dart';
-import 'package:starcitizen_doctor/common/conf/binary_conf.dart';
 import 'package:starcitizen_doctor/common/conf/url_conf.dart';
 import 'package:starcitizen_doctor/common/io/aria2c.dart';
 import 'package:starcitizen_doctor/ui/index_ui.dart';
@@ -29,8 +28,7 @@ class SplashUIModel extends BaseUIModel {
     await AppConf.checkUpdate();
     step = 2;
     notifyListeners();
-    await handleError(() => BinaryModuleConf.extractModel());
-    await handleError(() => Aria2cManager.launchDaemon());
+    await Aria2cManager.checkLazyLoad();
     Navigator.pushAndRemoveUntil(
         context!,
         BaseUIContainer(
diff --git a/lib/ui/tools/tools_ui_model.dart b/lib/ui/tools/tools_ui_model.dart
index 04c5cce..2201a44 100644
--- a/lib/ui/tools/tools_ui_model.dart
+++ b/lib/ui/tools/tools_ui_model.dart
@@ -381,13 +381,17 @@ class ToolsUIModel extends BaseUIModel {
       return;
     }
 
+    /// 启动模块
+    await handleError(() => Aria2cManager.launchDaemon());
+    final aria2c = Aria2cManager.getClient();
+
     try {
       final b64Str = base64Encode(btData.data!);
-      final gid = await Aria2cManager.aria2c
-          .addTorrent(b64Str, extraParams: {"dir": savePath});
+      final gid =
+          await aria2c.addTorrent(b64Str, extraParams: {"dir": savePath});
       _working = false;
       dPrint("Aria2cManager.aria2c.addUri resp === $gid");
-      await Aria2cManager.aria2c.saveSession();
+      await aria2c.saveSession();
       BaseUIContainer(
           uiCreate: () => DownloadsUI(),
           modelCreate: () => DownloadsUIModel()).push(context!);