diff --git a/bootstrap/init.go b/bootstrap/init.go
index 8c8958e..553bc81 100644
--- a/bootstrap/init.go
+++ b/bootstrap/init.go
@@ -24,7 +24,7 @@ func Init(path string) {
 	if conf.SystemConfig.Mode == "master" {
 		model.Init()
 		task.Init()
-		aria2.Init()
+		aria2.Init(false)
 		email.Init()
 		crontab.Init()
 	}
diff --git a/models/group.go b/models/group.go
index b45991b..c190975 100644
--- a/models/group.go
+++ b/models/group.go
@@ -24,15 +24,15 @@ type Group struct {
 
 // GroupOption 用户组其他配置
 type GroupOption struct {
-	ArchiveDownload bool          `json:"archive_download,omitempty"` // 打包下载
-	ArchiveTask     bool          `json:"archive_task,omitempty"`     // 在线压缩
-	CompressSize    uint64        `json:"compress_size,omitempty"`    // 可压缩大小
-	DecompressSize  uint64        `json:"decompress_size,omitempty"`
-	OneTimeDownload bool          `json:"one_time_download,omitempty"`
-	ShareDownload   bool          `json:"share_download,omitempty"`
-	ShareFree       bool          `json:"share_free,omitempty"`
-	Aria2           bool          `json:"aria2,omitempty"`         // 离线下载
-	Aria2Options    []interface{} `json:"aria2_options,omitempty"` // 离线下载用户组配置
+	ArchiveDownload bool                   `json:"archive_download,omitempty"` // 打包下载
+	ArchiveTask     bool                   `json:"archive_task,omitempty"`     // 在线压缩
+	CompressSize    uint64                 `json:"compress_size,omitempty"`    // 可压缩大小
+	DecompressSize  uint64                 `json:"decompress_size,omitempty"`
+	OneTimeDownload bool                   `json:"one_time_download,omitempty"`
+	ShareDownload   bool                   `json:"share_download,omitempty"`
+	ShareFree       bool                   `json:"share_free,omitempty"`
+	Aria2           bool                   `json:"aria2,omitempty"`         // 离线下载
+	Aria2Options    map[string]interface{} `json:"aria2_options,omitempty"` // 离线下载用户组配置
 }
 
 // GetGroupByID 用ID获取用户组
diff --git a/models/migration.go b/models/migration.go
index fc25ca4..c6de4cd 100644
--- a/models/migration.go
+++ b/models/migration.go
@@ -140,10 +140,11 @@ Neue',Helvetica,Arial,sans-serif; box-sizing: border-box; font-size: 14px; verti
 		{Name: "gravatar_server", Value: `https://gravatar.loli.net/`, Type: "avatar"},
 		{Name: "defaultTheme", Value: `#3f51b5`, Type: "basic"},
 		{Name: "themes", Value: `{"#3f51b5":{"palette":{"primary":{"main":"#3f51b5"},"secondary":{"main":"#f50057"}}},"#2196f3":{"palette":{"primary":{"main":"#2196f3"},"secondary":{"main":"#FFC107"}}},"#673AB7":{"palette":{"primary":{"main":"#673AB7"},"secondary":{"main":"#2196F3"}}},"#E91E63":{"palette":{"primary":{"main":"#E91E63"},"secondary":{"main":"#42A5F5","contrastText":"#fff"}}},"#FF5722":{"palette":{"primary":{"main":"#FF5722"},"secondary":{"main":"#3F51B5"}}},"#FFC107":{"palette":{"primary":{"main":"#FFC107"},"secondary":{"main":"#26C6DA"}}},"#8BC34A":{"palette":{"primary":{"main":"#8BC34A","contrastText":"#fff"},"secondary":{"main":"#FF8A65","contrastText":"#fff"}}},"#009688":{"palette":{"primary":{"main":"#009688"},"secondary":{"main":"#4DD0E1","contrastText":"#fff"}}},"#607D8B":{"palette":{"primary":{"main":"#607D8B"},"secondary":{"main":"#F06292"}}},"#795548":{"palette":{"primary":{"main":"#795548"},"secondary":{"main":"#4CAF50","contrastText":"#fff"}}}}`, Type: "basic"},
-		{Name: "aria2_token", Value: `your token`, Type: "aria2"},
+		{Name: "aria2_token", Value: ``, Type: "aria2"},
+		{Name: "aria2_rpcurl", Value: ``, Type: "aria2"},
 		{Name: "aria2_temp_path", Value: ``, Type: "aria2"},
-		{Name: "aria2_options", Value: `[]`, Type: "aria2"},
-		{Name: "aria2_interval", Value: `10`, Type: "aria2"},
+		{Name: "aria2_options", Value: `{}`, Type: "aria2"},
+		{Name: "aria2_interval", Value: `60`, Type: "aria2"},
 		{Name: "max_worker_num", Value: `10`, Type: "task"},
 		{Name: "max_parallel_transfer", Value: `4`, Type: "task"},
 		{Name: "secret_key", Value: util.RandStringRunes(256), Type: "auth"},
diff --git a/pkg/aria2/aria2.go b/pkg/aria2/aria2.go
index d492938..413b5a2 100644
--- a/pkg/aria2/aria2.go
+++ b/pkg/aria2/aria2.go
@@ -7,18 +7,22 @@ import (
 	"github.com/HFO4/cloudreve/pkg/serializer"
 	"github.com/HFO4/cloudreve/pkg/util"
 	"net/url"
+	"sync"
 )
 
 // Instance 默认使用的Aria2处理实例
 var Instance Aria2 = &DummyAria2{}
 
+// Lock Instance的读写锁
+var Lock sync.RWMutex
+
 // EventNotifier 任务状态更新通知处理器
 var EventNotifier = &Notifier{}
 
 // Aria2 离线下载处理接口
 type Aria2 interface {
 	// CreateTask 创建新的任务
-	CreateTask(task *model.Download, options []interface{}) error
+	CreateTask(task *model.Download, options map[string]interface{}) error
 	// 返回状态信息
 	Status(task *model.Download) (rpc.StatusInfo, error)
 	// 取消任务
@@ -63,7 +67,7 @@ type DummyAria2 struct {
 }
 
 // CreateTask 创建新任务，此处直接返回未开启错误
-func (instance *DummyAria2) CreateTask(model *model.Download, options []interface{}) error {
+func (instance *DummyAria2) CreateTask(model *model.Download, options map[string]interface{}) error {
 	return ErrNotEnabled
 }
 
@@ -83,7 +87,16 @@ func (instance *DummyAria2) Select(task *model.Download, files []int) error {
 }
 
 // Init 初始化
-func Init() {
+func Init(isReload bool) {
+	Lock.Lock()
+	defer Lock.Unlock()
+
+	// 关闭上个初始连接
+	if previousClient, ok := Instance.(*RPCService); ok {
+		util.Log().Debug("关闭上个 aria2 连接")
+		previousClient.caller.Close()
+	}
+
 	options := model.GetSettingByNames("aria2_rpcurl", "aria2_token", "aria2_options")
 	timeout := model.GetIntSetting("aria2_call_timeout", 5)
 	if options["aria2_rpcurl"] == "" {
@@ -93,9 +106,6 @@ func Init() {
 
 	util.Log().Info("初始化 aria2 RPC 服务[%s]", options["aria2_rpcurl"])
 	client := &RPCService{}
-	if previousClient, ok := Instance.(*RPCService); ok {
-		client = previousClient
-	}
 
 	// 解析RPC服务地址
 	server, err := url.Parse(options["aria2_rpcurl"])
@@ -107,7 +117,7 @@ func Init() {
 	server.Path = "/jsonrpc"
 
 	// 加载自定义下载配置
-	var globalOptions []interface{}
+	var globalOptions map[string]interface{}
 	err = json.Unmarshal([]byte(options["aria2_options"]), &globalOptions)
 	if err != nil {
 		util.Log().Warning("无法解析 aria2 全局配置，%s", err)
@@ -123,13 +133,16 @@ func Init() {
 
 	Instance = client
 
-	// 从数据库中读取未完成任务，创建监控
-	unfinished := model.GetDownloadsByStatus(Ready, Paused, Downloading)
+	if !isReload {
+		// 从数据库中读取未完成任务，创建监控
+		unfinished := model.GetDownloadsByStatus(Ready, Paused, Downloading)
 
-	for i := 0; i < len(unfinished); i++ {
-		// 创建任务监控
-		NewMonitor(&unfinished[i])
+		for i := 0; i < len(unfinished); i++ {
+			// 创建任务监控
+			NewMonitor(&unfinished[i])
+		}
 	}
+
 }
 
 // getStatus 将给定的状态字符串转换为状态标识数字
diff --git a/pkg/aria2/aria2_test.go b/pkg/aria2/aria2_test.go
index aebbe37..0cca187 100644
--- a/pkg/aria2/aria2_test.go
+++ b/pkg/aria2/aria2_test.go
@@ -45,14 +45,14 @@ func TestInit(t *testing.T) {
 	// 未指定RPC地址，跳过
 	{
 		cache.Set("setting_aria2_rpcurl", "", 0)
-		Init()
+		Init(false)
 		asserts.IsType(&DummyAria2{}, Instance)
 	}
 
 	// 无法解析服务器地址
 	{
 		cache.Set("setting_aria2_rpcurl", string(byte(0x7f)), 0)
-		Init()
+		Init(false)
 		asserts.IsType(&DummyAria2{}, Instance)
 	}
 
@@ -61,7 +61,7 @@ func TestInit(t *testing.T) {
 		Instance = &RPCService{}
 		cache.Set("setting_aria2_options", "?", 0)
 		cache.Set("setting_aria2_rpcurl", "ws://127.0.0.1:1234", 0)
-		Init()
+		Init(false)
 		asserts.IsType(&DummyAria2{}, Instance)
 	}
 
@@ -72,7 +72,7 @@ func TestInit(t *testing.T) {
 		cache.Set("setting_aria2_call_timeout", "1", 0)
 		cache.Set("setting_aria2_interval", "100", 0)
 		mock.ExpectQuery("SELECT(.+)").WillReturnRows(sqlmock.NewRows([]string{"g_id"}).AddRow("1"))
-		Init()
+		Init(false)
 		asserts.NoError(mock.ExpectationsWereMet())
 		asserts.IsType(&RPCService{}, Instance)
 	}
diff --git a/pkg/aria2/caller.go b/pkg/aria2/caller.go
index bb068dc..638792a 100644
--- a/pkg/aria2/caller.go
+++ b/pkg/aria2/caller.go
@@ -18,11 +18,11 @@ type RPCService struct {
 }
 
 type clientOptions struct {
-	Options []interface{} // 创建下载时额外添加的设置
+	Options map[string]interface{} // 创建下载时额外添加的设置
 }
 
 // Init 初始化
-func (client *RPCService) Init(server, secret string, timeout int, options []interface{}) error {
+func (client *RPCService) Init(server, secret string, timeout int, options map[string]interface{}) error {
 	// 客户端已存在，则关闭先前连接
 	if client.caller != nil {
 		client.caller.Close()
@@ -84,7 +84,7 @@ func (client *RPCService) Select(task *model.Download, files []int) error {
 }
 
 // CreateTask 创建新任务
-func (client *RPCService) CreateTask(task *model.Download, groupOptions []interface{}) error {
+func (client *RPCService) CreateTask(task *model.Download, groupOptions map[string]interface{}) error {
 	// 生成存储路径
 	path := filepath.Join(
 		model.GetSettingByName("aria2_temp_path"),
@@ -93,13 +93,17 @@ func (client *RPCService) CreateTask(task *model.Download, groupOptions []interf
 	)
 
 	// 创建下载任务
-	options := []interface{}{map[string]string{"dir": path}}
-	if len(client.options.Options) > 0 {
-		options = append(options, client.options.Options...)
+	options := map[string]interface{}{
+		"dir": path,
+	}
+	for k, v := range client.options.Options {
+		options[k] = v
+	}
+	for k, v := range groupOptions {
+		options[k] = v
 	}
-	options = append(options, groupOptions...)
 
-	gid, err := client.caller.AddURI(task.Source, options...)
+	gid, err := client.caller.AddURI(task.Source, options)
 	if err != nil || gid == "" {
 		return err
 	}
diff --git a/pkg/aria2/caller_test.go b/pkg/aria2/caller_test.go
index 7bfec67..ca065b8 100644
--- a/pkg/aria2/caller_test.go
+++ b/pkg/aria2/caller_test.go
@@ -46,6 +46,6 @@ func TestRPCService_CreateTask(t *testing.T) {
 	caller := &RPCService{}
 	asserts.NoError(caller.Init("http://127.0.0.1", "", 1, nil))
 	cache.Set("setting_aria2_temp_path", "test", 0)
-	err := caller.CreateTask(&model.Download{Parent: "test"}, []interface{}{map[string]string{"1": "1"}})
+	err := caller.CreateTask(&model.Download{Parent: "test"}, map[string]interface{}{"1": "1"})
 	asserts.Error(err)
 }
diff --git a/pkg/aria2/monitor.go b/pkg/aria2/monitor.go
index f5ce324..eeb9226 100644
--- a/pkg/aria2/monitor.go
+++ b/pkg/aria2/monitor.go
@@ -69,7 +69,10 @@ func (monitor *Monitor) Loop() {
 
 // Update 更新状态，返回值表示是否退出监控
 func (monitor *Monitor) Update() bool {
+	Lock.RLock()
 	status, err := Instance.Status(monitor.Task)
+	Lock.RUnlock()
+
 	if err != nil {
 		monitor.retried++
 		util.Log().Warning("无法获取下载任务[%s]的状态，%s", monitor.Task.GID, err)
@@ -160,7 +163,9 @@ func (monitor *Monitor) UpdateTaskInfo(status rpc.StatusInfo) error {
 		// 文件大小更新后，对文件限制等进行校验
 		if err := monitor.ValidateFile(); err != nil {
 			// 验证失败时取消任务
+			Lock.RLock()
 			Instance.Cancel(monitor.Task)
+			Lock.RUnlock()
 			return err
 		}
 	}
diff --git a/routers/controllers/admin.go b/routers/controllers/admin.go
index a0c1349..749264f 100644
--- a/routers/controllers/admin.go
+++ b/routers/controllers/admin.go
@@ -1,6 +1,7 @@
 package controllers
 
 import (
+	"github.com/HFO4/cloudreve/pkg/aria2"
 	"github.com/HFO4/cloudreve/pkg/email"
 	"github.com/HFO4/cloudreve/pkg/request"
 	"github.com/HFO4/cloudreve/pkg/serializer"
@@ -66,6 +67,8 @@ func AdminReloadService(c *gin.Context) {
 	switch service {
 	case "email":
 		email.Init()
+	case "aria2":
+		aria2.Init(true)
 	}
 
 	c.JSON(200, serializer.Response{})
diff --git a/service/aria2/add.go b/service/aria2/add.go
index 2b67578..8f552a2 100644
--- a/service/aria2/add.go
+++ b/service/aria2/add.go
@@ -41,9 +41,13 @@ func (service *AddURLService) Add(c *gin.Context, taskType int) serializer.Respo
 		UserID: fs.User.ID,
 		Source: service.URL,
 	}
+
+	aria2.Lock.RLock()
 	if err := aria2.Instance.CreateTask(task, fs.User.Group.OptionsSerialized.Aria2Options); err != nil {
+		aria2.Lock.RUnlock()
 		return serializer.Err(serializer.CodeNotSet, "任务创建失败", err)
 	}
+	aria2.Lock.RUnlock()
 
 	return serializer.Response{}
 }
diff --git a/service/aria2/manage.go b/service/aria2/manage.go
index f36ab30..4d3ab7d 100644
--- a/service/aria2/manage.go
+++ b/service/aria2/manage.go
@@ -52,6 +52,8 @@ func (service *DownloadTaskService) Delete(c *gin.Context) serializer.Response {
 	}
 
 	// 取消任务
+	aria2.Lock.RLock()
+	defer aria2.Lock.RUnlock()
 	if err := aria2.Instance.Cancel(download); err != nil {
 		return serializer.Err(serializer.CodeNotSet, "操作失败", err)
 	}
@@ -75,6 +77,8 @@ func (service *SelectFileService) Select(c *gin.Context) serializer.Response {
 	}
 
 	// 选取下载
+	aria2.Lock.RLock()
+	defer aria2.Lock.RUnlock()
 	if err := aria2.Instance.Select(download, service.Indexes); err != nil {
 		return serializer.Err(serializer.CodeNotSet, "操作失败", err)
 	}