diff --git a/cmd/dashboard/main.go b/cmd/dashboard/main.go
index e302ec8..fce8654 100644
--- a/cmd/dashboard/main.go
+++ b/cmd/dashboard/main.go
@@ -63,19 +63,20 @@ func initSystem() {
 	loadServers() //加载服务器列表
 	loadCrons()   //加载计划任务
 
-	// 清理 服务请求记录 和 流量记录 的旧数据
+	// 每天的3:30 对 监控记录 和 流量记录 进行清理
 	_, err := singleton.Cron.AddFunc("0 30 3 * * *", cleanMonitorHistory)
 	if err != nil {
 		panic(err)
 	}
 
-	// 流量记录打点
+	// 每小时对流量记录进行打点
 	_, err = singleton.Cron.AddFunc("0 0 * * * *", recordTransferHourlyUsage)
 	if err != nil {
 		panic(err)
 	}
 }
 
+// recordTransferHourlyUsage 对流量记录进行打点
 func recordTransferHourlyUsage() {
 	singleton.ServerLock.Lock()
 	defer singleton.ServerLock.Unlock()
@@ -102,8 +103,9 @@ func recordTransferHourlyUsage() {
 	log.Println("NEZHA>> Cron 流量统计入库", len(txs), singleton.DB.Create(txs).Error)
 }
 
+// cleanMonitorHistory 清理无效或过时的 监控记录 和 流量记录
 func cleanMonitorHistory() {
-	// 清理无效数据
+	// 清理已被删除的服务器的监控记录与流量记录
 	singleton.DB.Unscoped().Delete(&model.MonitorHistory{}, "created_at < ? OR monitor_id NOT IN (SELECT `id` FROM monitors)", time.Now().AddDate(0, 0, -30))
 	singleton.DB.Unscoped().Delete(&model.Transfer{}, "server_id NOT IN (SELECT `id` FROM servers)")
 	// 计算可清理流量记录的时长
@@ -146,6 +148,7 @@ func cleanMonitorHistory() {
 	}
 }
 
+//loadServers 加载服务器列表并根据ID排序
 func loadServers() {
 	var servers []model.Server
 	singleton.DB.Find(&servers)
@@ -159,6 +162,7 @@ func loadServers() {
 	singleton.ReSortServer()
 }
 
+// loadCrons 加载计划任务
 func loadCrons() {
 	var crons []model.Cron
 	singleton.DB.Find(&crons)
@@ -172,6 +176,7 @@ func loadCrons() {
 			crIgnoreMap[cr.Servers[j]] = true
 		}
 
+		// 注册计划任务
 		cr.CronJobID, err = singleton.Cron.AddFunc(cr.Scheduler, singleton.CronTrigger(cr))
 		if err == nil {
 			singleton.Crons[cr.ID] = &cr
@@ -192,7 +197,7 @@ func loadCrons() {
 func main() {
 	cleanMonitorHistory()
 	go rpc.ServeRPC(singleton.Conf.GRPCPort)
-	serviceSentinelDispatchBus := make(chan model.Monitor)
+	serviceSentinelDispatchBus := make(chan model.Monitor) // 用于传递服务监控任务信息的channel
 	go rpc.DispatchTask(serviceSentinelDispatchBus)
 	go rpc.DispatchKeepalive()
 	go singleton.AlertSentinelStart()
diff --git a/model/alertrule.go b/model/alertrule.go
index b0a6230..321480d 100644
--- a/model/alertrule.go
+++ b/model/alertrule.go
@@ -43,6 +43,7 @@ func (r *AlertRule) Enabled() bool {
 	return r.Enable != nil && *r.Enable
 }
 
+// Snapshot 对传入的Server进行该报警规则下所有type的检查 返回包含每项检查结果的空接口
 func (r *AlertRule) Snapshot(cycleTransferStats *CycleTransferStats, server *Server, db *gorm.DB) []interface{} {
 	var point []interface{}
 	for i := 0; i < len(r.Rules); i++ {
@@ -51,9 +52,10 @@ func (r *AlertRule) Snapshot(cycleTransferStats *CycleTransferStats, server *Ser
 	return point
 }
 
+// Check 传入包含当前报警规则下所有type检查结果的空接口 返回报警持续时间与是否通过报警检查(通过则返回true)
 func (r *AlertRule) Check(points [][]interface{}) (int, bool) {
-	var max int
-	var count int
+	var max int   // 报警持续时间
+	var count int // 检查未通过的个数
 	for i := 0; i < len(r.Rules); i++ {
 		if r.Rules[i].IsTransferDurationRule() {
 			// 循环区间流量报警
@@ -83,11 +85,13 @@ func (r *AlertRule) Check(points [][]interface{}) (int, bool) {
 					fail++
 				}
 			}
+			// 当70%以上的采样点未通过规则判断时 才认为当前检查未通过
 			if fail/total > 0.7 {
 				count++
 				break
 			}
 		}
 	}
+	// 仅当所有检查均未通过时 返回false
 	return max, count != len(r.Rules)
 }
diff --git a/model/config.go b/model/config.go
index 11927c2..92e04ba 100644
--- a/model/config.go
+++ b/model/config.go
@@ -48,8 +48,9 @@ func (c *AgentConfig) Save() error {
 	return ioutil.WriteFile(c.v.ConfigFileUsed(), data, os.ModePerm)
 }
 
+// Config 站点配置
 type Config struct {
-	Debug bool
+	Debug bool // debug模式开关
 	Site  struct {
 		Brand        string // 站点名称
 		CookieName   string // 浏览器 Cookie 名称
@@ -73,13 +74,14 @@ type Config struct {
 	EnablePlainIPInNotification bool
 
 	// IP变更提醒
-	Cover                 uint8  // 覆盖范围
-	IgnoredIPNotification string // 特定服务器
+	Cover                 uint8  // 覆盖范围（0:提醒未被 IgnoredIPNotification 包含的所有服务器; 1:仅提醒被 IgnoredIPNotification 包含的服务器;）
+	IgnoredIPNotification string // 特定服务器IP（多个服务器用逗号分隔）
 
 	v                              *viper.Viper
-	IgnoredIPNotificationServerIDs map[uint64]bool
+	IgnoredIPNotificationServerIDs map[uint64]bool // [ServerID] -> bool(值为true代表当前ServerID在特定服务器列表内）
 }
 
+// Read 读取配置文件并应用
 func (c *Config) Read(path string) error {
 	c.v = viper.New()
 	c.v.SetConfigFile(path)
@@ -101,6 +103,7 @@ func (c *Config) Read(path string) error {
 	return nil
 }
 
+// updateIgnoredIPNotificationID 更新用于判断服务器ID是否属于特定服务器的map
 func (c *Config) updateIgnoredIPNotificationID() {
 	c.IgnoredIPNotificationServerIDs = make(map[uint64]bool)
 	splitedIDs := strings.Split(c.IgnoredIPNotification, ",")
@@ -112,6 +115,7 @@ func (c *Config) updateIgnoredIPNotificationID() {
 	}
 }
 
+// Save 保存配置文件
 func (c *Config) Save() error {
 	c.updateIgnoredIPNotificationID()
 	data, err := yaml.Marshal(c)
diff --git a/model/cron.go b/model/cron.go
index f4394c2..fbdf75a 100644
--- a/model/cron.go
+++ b/model/cron.go
@@ -22,7 +22,7 @@ type Cron struct {
 	PushSuccessful bool      // 推送成功的通知
 	LastExecutedAt time.Time // 最后一次执行时间
 	LastResult     bool      // 最后一次执行结果
-	Cover          uint8
+	Cover          uint8     // 计划任务覆盖范围 (0:仅覆盖特定服务器 1:仅忽略特定服务器)
 
 	CronJobID  cron.EntryID `gorm:"-"`
 	ServersRaw string
diff --git a/model/monitor.go b/model/monitor.go
index b10a5a9..cdabccd 100644
--- a/model/monitor.go
+++ b/model/monitor.go
@@ -56,6 +56,7 @@ func (m *Monitor) PB() *pb.Task {
 	}
 }
 
+// CronSpec 返回服务监控请求间隔对应的 cron 表达式
 func (m *Monitor) CronSpec() string {
 	if m.Duration == 0 {
 		// 默认间隔 30 秒
@@ -76,6 +77,7 @@ func (m *Monitor) AfterFind(tx *gorm.DB) error {
 	return nil
 }
 
+// IsServiceSentinelNeeded 判断该任务类型是否需要进行服务监控 需要则返回true
 func IsServiceSentinelNeeded(t uint64) bool {
 	return t != TaskTypeCommand && t != TaskTypeTerminal && t != TaskTypeUpgrade
 }
diff --git a/model/monitor_history.go b/model/monitor_history.go
index 6e3f431..c7a5391 100644
--- a/model/monitor_history.go
+++ b/model/monitor_history.go
@@ -4,6 +4,7 @@ import (
 	pb "github.com/naiba/nezha/proto"
 )
 
+// MonitorHistory 历史监控记录
 type MonitorHistory struct {
 	Common
 	MonitorID  uint64
diff --git a/model/rule.go b/model/rule.go
index bcec64c..8589665 100644
--- a/model/rule.go
+++ b/model/rule.go
@@ -159,10 +159,12 @@ func (u *Rule) Snapshot(cycleTransferStats *CycleTransferStats, server *Server,
 	return nil
 }
 
+// IsTransferDurationRule 判断该规则是否属于周期流量规则 属于则返回true
 func (rule Rule) IsTransferDurationRule() bool {
 	return strings.HasSuffix(rule.Type, "_cycle")
 }
 
+// GetTransferDurationStart 获取周期流量的起始时间
 func (rule Rule) GetTransferDurationStart() time.Time {
 	// Accept uppercase and lowercase
 	unit := strings.ToLower(rule.CycleUnit)
@@ -202,6 +204,7 @@ func (rule Rule) GetTransferDurationStart() time.Time {
 	return startTime
 }
 
+// GetTransferDurationEnd 获取周期流量结束时间
 func (rule Rule) GetTransferDurationEnd() time.Time {
 	// Accept uppercase and lowercase
 	unit := strings.ToLower(rule.CycleUnit)
diff --git a/service/singleton/alertsentinel.go b/service/singleton/alertsentinel.go
index 1d7d3d9..8902700 100644
--- a/service/singleton/alertsentinel.go
+++ b/service/singleton/alertsentinel.go
@@ -23,10 +23,11 @@ type NotificationHistory struct {
 // 报警规则
 var AlertsLock sync.RWMutex
 var Alerts []*model.AlertRule
-var alertsStore map[uint64]map[uint64][][]interface{}
-var alertsPrevState map[uint64]map[uint64]uint
-var AlertsCycleTransferStatsStore map[uint64]*model.CycleTransferStats
+var alertsStore map[uint64]map[uint64][][]interface{}                  // [alert_id][server_id] -> 对应报警规则的检查结果
+var alertsPrevState map[uint64]map[uint64]uint                         // [alert_id][server_id] -> 对应报警规则的上一次报警状态
+var AlertsCycleTransferStatsStore map[uint64]*model.CycleTransferStats // [alert_id] -> 对应报警规则的周期流量统计
 
+// addCycleTransferStatsInfo 向AlertsCycleTransferStatsStore中添加周期流量报警统计信息
 func addCycleTransferStatsInfo(alert *model.AlertRule) {
 	if !alert.Enabled() {
 		return
@@ -52,6 +53,7 @@ func addCycleTransferStatsInfo(alert *model.AlertRule) {
 	}
 }
 
+// AlertSentinelStart 报警器启动
 func AlertSentinelStart() {
 	alertsStore = make(map[uint64]map[uint64][][]interface{})
 	alertsPrevState = make(map[uint64]map[uint64]uint)
@@ -120,6 +122,7 @@ func OnDeleteAlert(id uint64) {
 	delete(AlertsCycleTransferStatsStore, id)
 }
 
+// checkStatus 检查报警规则并发送报警
 func checkStatus() {
 	AlertsLock.RLock()
 	defer AlertsLock.RUnlock()
diff --git a/service/singleton/notification.go b/service/singleton/notification.go
index d9f9d08..a7783d4 100644
--- a/service/singleton/notification.go
+++ b/service/singleton/notification.go
@@ -16,6 +16,7 @@ const firstNotificationDelay = time.Minute * 15
 var notifications []model.Notification
 var notificationsLock sync.RWMutex
 
+// LoadNotifications 加载通知方式到 singleton.notifications 变量
 func LoadNotifications() {
 	notificationsLock.Lock()
 	if err := DB.Find(&notifications).Error; err != nil {
diff --git a/service/singleton/servicesentinel.go b/service/singleton/servicesentinel.go
index f3465a0..50aa78f 100644
--- a/service/singleton/servicesentinel.go
+++ b/service/singleton/servicesentinel.go
@@ -24,12 +24,14 @@ type ReportData struct {
 	Reporter uint64
 }
 
+// _TodayStatsOfMonitor 今日监控记录
 type _TodayStatsOfMonitor struct {
-	Up    int
-	Down  int
-	Delay float32
+	Up    int     // 今日在线计数
+	Down  int     // 今日离线计数
+	Delay float32 // 今日平均延迟
 }
 
+// NewServiceSentinel 创建服务监控器
 func NewServiceSentinel(serviceSentinelDispatchBus chan<- model.Monitor) {
 	ServiceSentinelShared = &ServiceSentinel{
 		serviceReportChannel:                make(chan ReportData, 200),
@@ -46,6 +48,7 @@ func NewServiceSentinel(serviceSentinelDispatchBus chan<- model.Monitor) {
 		monthlyStatus: make(map[uint64]*model.ServiceItemResponse),
 		dispatchBus:   serviceSentinelDispatchBus,
 	}
+	// 加载历史记录
 	ServiceSentinelShared.loadMonitorHistory()
 
 	year, month, day := time.Now().Date()
@@ -72,6 +75,7 @@ func NewServiceSentinel(serviceSentinelDispatchBus chan<- model.Monitor) {
 		ServiceSentinelShared.latestDate[k] = time.Now().Format("02-Jan-06")
 	}
 
+	// 启动服务监控器
 	go ServiceSentinelShared.worker()
 
 	// 每日将游标往后推一天
@@ -88,20 +92,20 @@ func NewServiceSentinel(serviceSentinelDispatchBus chan<- model.Monitor) {
 type ServiceSentinel struct {
 	serviceResponseDataStoreLock        sync.RWMutex
 	monitorsLock                        sync.RWMutex
-	serviceReportChannel                chan ReportData
-	serviceStatusToday                  map[uint64]*_TodayStatsOfMonitor
-	serviceCurrentStatusIndex           map[uint64]int
-	serviceCurrentStatusData            map[uint64][]model.MonitorHistory
-	latestDate                          map[uint64]string
+	serviceReportChannel                chan ReportData                   // 服务状态汇报管道
+	serviceStatusToday                  map[uint64]*_TodayStatsOfMonitor  // [monitor_id] -> _TodayStatsOfMonitor
+	serviceCurrentStatusIndex           map[uint64]int                    // [monitor_id] -> 该监控ID对应的 serviceCurrentStatusData 的最新索引下标
+	serviceCurrentStatusData            map[uint64][]model.MonitorHistory // [monitor_id] -> []model.MonitorHistory
+	latestDate                          map[uint64]string                 // 最近一次更新时间
 	lastStatus                          map[uint64]string
-	serviceResponseDataStoreCurrentUp   map[uint64]uint64
-	serviceResponseDataStoreCurrentDown map[uint64]uint64
-	monitors                            map[uint64]*model.Monitor
+	serviceResponseDataStoreCurrentUp   map[uint64]uint64         // [monitor_id] -> 当前服务在线计数
+	serviceResponseDataStoreCurrentDown map[uint64]uint64         // [monitor_id] -> 当前服务离线计数
+	monitors                            map[uint64]*model.Monitor // [monitor_id] -> model.Monitor
 	sslCertCache                        map[uint64]string
 	// 30天数据缓存
 	monthlyStatusLock sync.Mutex
-	monthlyStatus     map[uint64]*model.ServiceItemResponse
-	// 服务监控调度计划任务
+	monthlyStatus     map[uint64]*model.ServiceItemResponse // [monitor_id] -> model.ServiceItemResponse
+	// 服务监控任务调度管道
 	dispatchBus chan<- model.Monitor
 }
 
@@ -120,6 +124,7 @@ func (ss *ServiceSentinel) refreshMonthlyServiceStatus() {
 	}
 }
 
+// Dispatch 将传入的 ReportData 传给 服务状态汇报管道
 func (ss *ServiceSentinel) Dispatch(r ReportData) {
 	ss.serviceReportChannel <- r
 }
@@ -137,6 +142,7 @@ func (ss *ServiceSentinel) Monitors() []*model.Monitor {
 	return monitors
 }
 
+// LoadStats 加载服务监控器的历史状态信息
 func (ss *ServiceSentinel) loadMonitorHistory() {
 	var monitors []*model.Monitor
 	DB.Find(&monitors)
@@ -146,6 +152,7 @@ func (ss *ServiceSentinel) loadMonitorHistory() {
 	ss.monitors = make(map[uint64]*model.Monitor)
 	for i := 0; i < len(monitors); i++ {
 		task := *monitors[i]
+		// 通过cron定时将服务监控任务传递给任务调度管道
 		monitors[i].CronJobID, err = Cron.AddFunc(task.CronSpec(), func() {
 			ss.dispatchBus <- task
 		})
@@ -171,7 +178,7 @@ func (ss *ServiceSentinel) loadMonitorHistory() {
 		}
 	}
 
-	// 加载历史记录
+	// 加载服务监控历史记录
 	var mhs []model.MonitorHistory
 	DB.Where("created_at >= ? AND created_at < ?", today.AddDate(0, 0, -29), today).Find(&mhs)
 	for i := 0; i < len(mhs); i++ {
@@ -266,6 +273,7 @@ func (ss *ServiceSentinel) LoadStats() map[uint64]*model.ServiceItemResponse {
 	return ss.monthlyStatus
 }
 
+// getStateStr 根据服务在线率返回对应的状态字符串
 func getStateStr(percent uint64) string {
 	if percent == 0 {
 		return "无数据"
@@ -279,7 +287,9 @@ func getStateStr(percent uint64) string {
 	return "故障"
 }
 
+// worker 服务监控的实际工作流程
 func (ss *ServiceSentinel) worker() {
+	// 从服务状态汇报管道获取汇报的服务数据
 	for r := range ss.serviceReportChannel {
 		if ss.monitors[r.Data.GetId()] == nil || ss.monitors[r.Data.GetId()].ID == 0 {
 			log.Printf("NEZAH>> 错误的服务监控上报 %+v", r)
@@ -355,7 +365,7 @@ func (ss *ServiceSentinel) worker() {
 		// SSL 证书报警
 		var errMsg string
 		if strings.HasPrefix(mh.Data, "SSL证书错误：") {
-			// 排除 i/o timeont、connection timeout、EOF 错误
+			// 排除 i/o timeout、connection timeout、EOF 错误
 			if !strings.HasSuffix(mh.Data, "timeout") &&
 				!strings.HasSuffix(mh.Data, "EOF") &&
 				!strings.HasSuffix(mh.Data, "timed out") {
diff --git a/service/singleton/singleton.go b/service/singleton/singleton.go
index f82bf80..531ea5a 100644
--- a/service/singleton/singleton.go
+++ b/service/singleton/singleton.go
@@ -23,14 +23,15 @@ var (
 	DB    *gorm.DB
 	Loc   *time.Location
 
-	ServerList map[uint64]*model.Server
-	SecretToID map[string]uint64
+	ServerList map[uint64]*model.Server // [ServerID] -> model.Server
+	SecretToID map[string]uint64        // [ServerSecret] -> ServerID
 	ServerLock sync.RWMutex
 
-	SortedServerList []*model.Server
+	SortedServerList []*model.Server // 用于存储服务器列表的 slice，按照服务器 ID 排序
 	SortedServerLock sync.RWMutex
 )
 
+// Init 初始化时区为上海时区
 func Init() {
 	var err error
 	Loc, err = time.LoadLocation("Asia/Shanghai")
@@ -39,6 +40,7 @@ func Init() {
 	}
 }
 
+// ReSortServer 根据服务器ID 对服务器列表进行排序（ID越大越靠前）
 func ReSortServer() {
 	ServerLock.RLock()
 	defer ServerLock.RUnlock()
@@ -50,6 +52,7 @@ func ReSortServer() {
 		SortedServerList = append(SortedServerList, s)
 	}
 
+	// 按照服务器 ID 排序的具体实现（ID越大越靠前）
 	sort.SliceStable(SortedServerList, func(i, j int) bool {
 		if SortedServerList[i].DisplayIndex == SortedServerList[j].DisplayIndex {
 			return SortedServerList[i].ID < SortedServerList[j].ID