diff --git a/auto_rotate.go b/auto_rotate.go
new file mode 100644
index 0000000..1e4b7f3
--- /dev/null
+++ b/auto_rotate.go
@@ -0,0 +1,53 @@
+package log
+
+import (
+	"fmt"
+	"github.com/robfig/cron"
+	"log"
+	"sync"
+	"time"
+)
+
+var (
+	logPath string
+	once    sync.Once
+	Spec    = "@daily"
+)
+
+// RegisterRotationWithSpec set up crontab scheduler for log rotation
+//
+//	spec, "* * * * * *"; "@daily"
+func RegisterRotationWithSpec(path, spec string) {
+	if "" == spec {
+		spec = Spec
+	}
+	listening(path, spec)
+}
+
+func RegisterRotation(path string) {
+	listening(path, Spec)
+}
+
+func listening(path, spec string) {
+	once.Do(func() {
+		logPath = path
+		rotate()
+		go _listening(spec)
+	})
+}
+
+func _listening(spec string) {
+	_c := cron.New()
+	if err := _c.AddFunc(spec, rotate); nil != err {
+		panic(fmt.Sprintf("failed to establish crontab job: %s", err.Error()))
+	} else {
+		log.Println("log rotation started ...")
+	}
+
+	_c.Start()
+	select {}
+}
+
+func rotate() {
+	RotateLogger(New(logPath+time.Now().Format("2006-01-02"), logPath))
+}
diff --git a/cmd/print.go b/cmd/print.go
index b9ee1ec..c22f768 100644
--- a/cmd/print.go
+++ b/cmd/print.go
@@ -2,21 +2,12 @@ package main
 
 import (
 	"git.drinkme.beer/yinghe/log"
-	"time"
 )
 
 func main() {
-	log.Infof("hahah")
-
-	log.ReloadLogger("./conf/cfg.toml")
-	log.Infof(" reloaded.")
-
-	now := time.Now()
-	log.RotateLogger(log.New(`./logs/cmd.`+now.Format(time.RFC3339), `./logs/cmd`))
-	log.Info("ping")
-	log.RotateLogger(log.New(`./logs/cmd.`+now.Format(time.RFC3339), `./logs/cmd`))
+	spec := "@daily"
+	log.RegisterRotationWithSpec(`./logs/cmd`, spec)
+	log.RegisterRotation("./log/cmd")
+	log.Infof("ping")
 	log.Infof("pong")
-
-	log.RotateLogger(log.New(`./logs/cmd.`+now.Add(time.Hour).Format(time.RFC3339), `./logs/cmd`))
-	log.Infof("one hour later....")
 }
diff --git a/logger.go b/logger.go
index 0db06f5..48338a8 100644
--- a/logger.go
+++ b/logger.go
@@ -8,6 +8,7 @@ import (
 	"log"
 	"os"
 	"path"
+	"time"
 
 	"github.com/BurntSushi/toml"
 	"go.uber.org/zap"
@@ -17,8 +18,6 @@ import (
 
 var (
 	logger Logger
-	//OutputPaths    = ""
-	//ErrOutputPaths = ""
 )
 
 type YLogger struct {
@@ -56,7 +55,7 @@ func init() {
 	}
 	cfg = logCfg.Logs
 
-	cfg.OutputPaths = cfg.LogPath + cfg.APPName + ".log"
+	cfg.OutputPaths = cfg.LogPath + cfg.APPName + time.Now().Format("2006-01-02") + ".log"
 	cfg.ErrorOutputPaths = cfg.LogPath + cfg.APPName + ".error"
 
 	err := InitLog(cfg.LogConf, cfg)
@@ -76,7 +75,7 @@ func ReloadLogger(configFile string) {
 		log.Fatalf("Read config file err:%s", err.Error())
 	}
 	cfg = logCfg.Logs
-	cfg.OutputPaths = cfg.LogPath + cfg.APPName + ".log"
+	cfg.OutputPaths = cfg.LogPath + cfg.APPName + time.Now().Format("2006-01-02") + ".log"
 	cfg.ErrorOutputPaths = cfg.LogPath + cfg.APPName + ".error"
 
 	err := InitLog(cfg.LogConf, cfg)
@@ -133,8 +132,6 @@ encoderConfig:
 func InitLog(logConfFile string, cfg LogCfg) error {
 	conf := &zap.Config{}
 	if logConfFile != "" {
-		//InitLogger(nil)
-		//return fmt.Errorf("log configure file name is nil")
 		if path.Ext(logConfFile) != ".yml" {
 			InitLogger(nil)
 			return fmt.Errorf("log configure file name{%s} suffix must be .yml", logConfFile)
@@ -166,12 +163,11 @@ func InitLog(logConfFile string, cfg LogCfg) error {
 				NameKey:        "logger",
 				CallerKey:      "caller",
 				StacktraceKey:  "stacktrace",
-				LineEnding:     "",
-				EncodeLevel:    zapcore.LowercaseLevelEncoder,
 				EncodeTime:     zapcore.EpochMillisTimeEncoder,
 				EncodeDuration: zapcore.SecondsDurationEncoder,
 				EncodeCaller:   zapcore.ShortCallerEncoder,
 				EncodeName:     nil,
+				EncodeLevel:    nil,
 			},
 		}
 
@@ -181,13 +177,8 @@ func InitLog(logConfFile string, cfg LogCfg) error {
 			return fmt.Errorf("[Unmarshal]init logger error: %v", err)
 		}
 	}
-
-	log.Println("to set yuanex logger ...")
-
 	conf.OutputPaths = append(conf.OutputPaths, cfg.OutputPaths)
 	conf.ErrorOutputPaths = append(conf.ErrorOutputPaths, cfg.ErrorOutputPaths)
-	log.Println("OutputPahts -->", conf.OutputPaths)
-	log.Println("ErrorOutputPahts -->", conf.ErrorOutputPaths)
 	InitLogger(conf)
 
 	return nil