diff --git a/go.mod b/go.mod
index a7f306e..2e231ec 100644
--- a/go.mod
+++ b/go.mod
@@ -2,11 +2,10 @@ module github.com/ssdomei232/goodBaby
 
 go 1.24.0
 
-toolchain go1.24.7
-
 require (
 	github.com/CuteReimu/bilibili/v2 v2.3.5
 	github.com/gin-gonic/gin v1.11.0
+	github.com/robfig/cron/v3 v3.0.1
 	github.com/wneessen/go-mail v0.7.2
 )
 
diff --git a/go.sum b/go.sum
index 99d2387..48f2f27 100644
--- a/go.sum
+++ b/go.sum
@@ -64,6 +64,8 @@ github.com/quic-go/qpack v0.5.1 h1:giqksBPnT/HDtZ6VhtFKgoLOWmlyo9Ei6u9PqzIMbhI=
 github.com/quic-go/qpack v0.5.1/go.mod h1:+PC4XFrEskIVkcLzpEkbLqq1uCoxPhQuvK5rH1ZgaEg=
 github.com/quic-go/quic-go v0.54.0 h1:6s1YB9QotYI6Ospeiguknbp2Znb/jZYjZLRXn9kMQBg=
 github.com/quic-go/quic-go v0.54.0/go.mod h1:e68ZEaCdyviluZmy44P6Iey98v/Wfz6HCjQEm+l8zTY=
+github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
+github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e h1:MRM5ITcdelLK2j1vwZ3Je0FKVCfqOLp5zO6trqMLYs0=
diff --git a/internal/bilibili.go b/internal/bilibili.go
index 9ff96a8..de6c989 100644
--- a/internal/bilibili.go
+++ b/internal/bilibili.go
@@ -262,3 +262,25 @@ func triggerLoginRequest(biliClient *bilibili.Client) {
 		}
 	}
 }
+
+// Enable periodic cookie checks
+func StartCookieChecker(cookieCheckTimer *time.Ticker, biliClient *bilibili.Client) {
+	// check cookie per hour
+	cookieCheckTimer = time.NewTicker(1 * time.Hour)
+	go func() {
+		for {
+			<-cookieCheckTimer.C
+			CheckCookieValidity(biliClient)
+		}
+	}()
+}
+
+func InitBilibili(biliClient *bilibili.Client) {
+	// try cached cookie
+	if !LoadCookies(biliClient) {
+		// if cookie check failed, request qrcode login
+		LoginWithQRCode(biliClient)
+	} else {
+		log.Println("使用已存储的有效cookie登录")
+	}
+}
diff --git a/internal/remind.go b/internal/remind.go
new file mode 100644
index 0000000..fa3a6ea
--- /dev/null
+++ b/internal/remind.go
@@ -0,0 +1,22 @@
+package internal
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/ssdomei232/goodBaby/configs"
+)
+
+func Reminder() {
+	config, err := configs.GetConfig()
+	if err != nil {
+		log.Printf("获取配置文件失败: %v", err)
+	}
+
+	remainingTime := GlobalTimerManager.GetRemainingTime()
+	if remainingTime <= 48*time.Hour {
+		sendMsg := fmt.Sprintf("距离摇篮系统触发还有%d小时,请尽快发送Signal", int(remainingTime.Hours()))
+		sendMailMsg(config.BiliWarnAddress, sendMsg, "GoodBaby提醒")
+	}
+}
diff --git a/internal/timer.go b/internal/timer.go
index 7fd06f1..0962def 100644
--- a/internal/timer.go
+++ b/internal/timer.go
@@ -1,4 +1,3 @@
-// internal/timer_manager.go
 package internal
 
 import (
diff --git a/internal/web.go b/internal/web.go
new file mode 100644
index 0000000..fcc01b1
--- /dev/null
+++ b/internal/web.go
@@ -0,0 +1,19 @@
+package internal
+
+import (
+	"html/template"
+	"io/fs"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// loadTemplates loads templates from the embedded file system
+func LoadTemplates(filesystem fs.FS) *template.Template {
+	templ := template.Must(template.New("").ParseFS(filesystem, "*.html"))
+	return templ
+}
+
+func IndexPage(c *gin.Context) {
+	c.HTML(http.StatusOK, "index.html", nil)
+}
diff --git a/main.go b/main.go
index a5cd2c2..da3ddc4 100644
--- a/main.go
+++ b/main.go
@@ -3,7 +3,6 @@ package main
 
 import (
 	"embed"
-	"html/template"
 	"io/fs"
 	"log"
 	"net/http"
@@ -11,6 +10,7 @@ import (
 
 	"github.com/CuteReimu/bilibili/v2"
 	"github.com/gin-gonic/gin"
+	"github.com/robfig/cron/v3"
 	"github.com/ssdomei232/goodBaby/configs"
 	"github.com/ssdomei232/goodBaby/internal"
 )
@@ -46,8 +46,8 @@ func init() {
 
 	// Init Bilibili Clinet
 	biliClient = bilibili.New()
-	initBilibili()
-	startCookieChecker() // Check Bilibili cookie
+	internal.InitBilibili(biliClient)
+	internal.StartCookieChecker(cookieCheckTimer, biliClient) // Check Bilibili cookie
 
 	internal.InitTimerManager(duration)
 	timer = time.NewTimer(duration)
@@ -57,6 +57,7 @@ func init() {
 	}()
 }
 
+// trigger
 func trigger(config configs.Config) {
 	if config.EnableQQ {
 		go internal.SendQQ()
@@ -69,44 +70,26 @@ func trigger(config configs.Config) {
 }
 
 func main() {
+	// cron job
+	internal.Reminder()
+	c := cron.New()
+	c.AddFunc("@every 1h", internal.Reminder)
+	c.Start()
+
+	// Web service
 	r := gin.Default()
 	templFS, _ := fs.Sub(templateFiles, "templates")
-	r.SetHTMLTemplate(loadTemplates(templFS))
+	r.SetHTMLTemplate(internal.LoadTemplates(templFS))
 	staticFS, _ := fs.Sub(staticFiles, "static")
 	r.StaticFS("/static", http.FS(staticFS))
 
-	r.GET("/", indexPage)
+	r.GET("/", internal.IndexPage)
 	r.GET("/signal", handleSignal)
 	r.GET("/timer/status", internal.HandleTimerStatus)
 	r.Run(":8088")
 }
 
-func indexPage(c *gin.Context) {
-	c.HTML(http.StatusOK, "index.html", nil)
-}
-
-func initBilibili() {
-	// try cached cookie
-	if !internal.LoadCookies(biliClient) {
-		// if cookie check failed, request qrcode login
-		internal.LoginWithQRCode(biliClient)
-	} else {
-		log.Println("使用已存储的有效cookie登录")
-	}
-}
-
-// Enable periodic cookie checks
-func startCookieChecker() {
-	// check cookie per hour
-	cookieCheckTimer = time.NewTicker(1 * time.Hour)
-	go func() {
-		for {
-			<-cookieCheckTimer.C
-			internal.CheckCookieValidity(biliClient)
-		}
-	}()
-}
-
+// Handle Signal
 func handleSignal(c *gin.Context) {
 	config, err := configs.GetConfig()
 	if err != nil {
@@ -129,9 +112,3 @@ func handleSignal(c *gin.Context) {
 	})
 	log.Println("触发信号")
 }
-
-// loadTemplates loads templates from the embedded file system
-func loadTemplates(filesystem fs.FS) *template.Template {
-	templ := template.Must(template.New("").ParseFS(filesystem, "*.html"))
-	return templ
-}