diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..616f937
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,25 @@
+Copyright (c) 2011, Deusty, LLC
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, with or
+without modification, are permitted provided that the following conditions
+are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+list of conditions and the following disclaimer.
+
+* Neither the name of Deusty nor the names of its contributors may be used
+to endorse or promote products derived from this software without specific
+prior written permission of Deusty, LLC.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/cmd/conf/cfg.toml b/cmd/conf/cfg.toml
new file mode 100644
index 0000000..9076fc4
--- /dev/null
+++ b/cmd/conf/cfg.toml
@@ -0,0 +1,5 @@
+
+[logger]
+conf = "./conf/log.yml"
+path = "./logs/"
+app_name = "cmd"
diff --git a/cmd/conf/log.yml b/cmd/conf/log.yml
new file mode 100644
index 0000000..5355c34
--- /dev/null
+++ b/cmd/conf/log.yml
@@ -0,0 +1,32 @@
+
+level: "info"
+development: false
+disableCaller: false
+disableStacktrace: false
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  # levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  # - "../logs/yuanex.log"
+  # - "./logs/yuanex.log"
+  - "stderr"
+errorOutputPaths:
+  # - "../logs/yuanex.error"
+  # - "./logs/yuanex.error"
+  - "stderr"
+initialFields:
diff --git a/cmd/logs/cmd.error b/cmd/logs/cmd.error
new file mode 100644
index 0000000..e69de29
diff --git a/cmd/logs/cmd.log b/cmd/logs/cmd.log
new file mode 100644
index 0000000..895abd6
--- /dev/null
+++ b/cmd/logs/cmd.log
@@ -0,0 +1,5 @@
+2020-07-30T03:46:39.626+0800	cmd/print.go:6	hahah
+2020-07-30T22:16:28.944+0800	cmd/print.go:6	hahah
+2020-08-03T16:01:50.178+0800	cmd/print.go:6	hahah
+2020-08-03T16:02:58.721+0800	cmd/print.go:6	hahah
+2020-08-03T16:02:58.725+0800	cmd/print.go:9	 reloaded.
diff --git a/cmd/print.go b/cmd/print.go
new file mode 100644
index 0000000..c69787b
--- /dev/null
+++ b/cmd/print.go
@@ -0,0 +1,11 @@
+package main
+
+import "git.drinkme.beer/yinghe/log"
+
+func main() {
+	log.Infof("hahah")
+
+	log.ReloadLogger("./conf/cfg.toml")
+	log.Infof(" reloaded.")
+	return
+}
diff --git a/config.go b/config.go
new file mode 100644
index 0000000..1d98027
--- /dev/null
+++ b/config.go
@@ -0,0 +1,23 @@
+package log
+
+type LogCfg struct {
+	LogConf string `toml:"conf"`
+	LogPath string `toml:"path"`
+	APPName string `toml:"app_name"`
+
+	DInfo            string
+	DError           string
+	OutputPaths      string
+	ErrorOutputPaths string
+}
+
+type GlobalCfg struct {
+	Logs LogCfg `toml:"logger"`
+}
+
+var cfg LogCfg
+
+const (
+	// ConfigFile is the default configuration file name.
+	ConfigFile = "./conf/cfg.toml"
+)
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..45c3187
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,9 @@
+module git.drinkme.beer/yinghe/log
+
+go 1.14
+
+require (
+	github.com/BurntSushi/toml v0.3.1
+	go.uber.org/zap v1.15.0
+	gopkg.in/yaml.v2 v2.3.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..c343902
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,45 @@
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+go.uber.org/atomic v1.6.0 h1:Ezj3JGmsOnG1MoRWQkPBsKLe9DwWD9QeXzTRzzldNVk=
+go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
+go.uber.org/multierr v1.5.0 h1:KCa4XfM8CWFCpxXRGok+Q0SS/0XBhMDbHHGABQLvD2A=
+go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
+go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
+go.uber.org/zap v1.15.0 h1:ZZCA22JRF2gQE5FoNmhmrf7jeJJ2uhqDUNRYKm8dvmM=
+go.uber.org/zap v1.15.0/go.mod h1:Mb2vm2krFEG5DV0W9qcHBYFtp/Wku1cvYaqPsS/WYfc=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
diff --git a/logger.go b/logger.go
new file mode 100644
index 0000000..804ddf6
--- /dev/null
+++ b/logger.go
@@ -0,0 +1,161 @@
+package log
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"path"
+
+	"github.com/BurntSushi/toml"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"gopkg.in/yaml.v2"
+)
+
+var (
+	logger Logger
+	//OutputPaths    = ""
+	//ErrOutputPaths = ""
+)
+
+type YLogger struct {
+	Logger
+	dynamicLevel zap.AtomicLevel
+}
+
+type Logger interface {
+	Info(args ...interface{})
+	Warn(args ...interface{})
+	Error(args ...interface{})
+	Debug(args ...interface{})
+
+	Infof(fmt string, args ...interface{})
+	Warnf(fmt string, args ...interface{})
+	Errorf(fmt string, args ...interface{})
+	Debugf(fmt string, args ...interface{})
+}
+
+func init() {
+	var (
+		logCfg     GlobalCfg
+	)
+
+	log.Println("config file name -->", ConfigFile)
+	if _, err := toml.DecodeFile(ConfigFile, &logCfg); err != nil {
+		log.Fatalf("Read config file err:%s", err.Error())
+	}
+	cfg = logCfg.Logs
+
+	cfg.OutputPaths = cfg.LogPath + cfg.APPName + ".log"
+	cfg.ErrorOutputPaths = cfg.LogPath + cfg.APPName + ".error"
+
+	err := InitLog(cfg.LogConf)
+	if err != nil {
+		log.Printf("[InitLog] warn: %v", err)
+	}
+}
+
+func ReloadLogger(configFile string) {
+
+	var (
+		logCfg     GlobalCfg
+	)
+
+	log.Println("config file name -->", configFile)
+	if _, err := toml.DecodeFile(configFile, &logCfg); err != nil {
+		log.Fatalf("Read config file err:%s", err.Error())
+	}
+	cfg = logCfg.Logs
+
+	cfg.OutputPaths = cfg.LogPath + cfg.APPName + ".log"
+	cfg.ErrorOutputPaths = cfg.LogPath + cfg.APPName + ".error"
+
+	err := InitLog(cfg.LogConf)
+	if err != nil {
+		log.Printf("[ReloadLogger] warn: %v", err)
+	}
+}
+
+func InitLog(logConfFile string) error {
+	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)
+	}
+
+	confFileStream, err := ioutil.ReadFile(logConfFile)
+	if err != nil {
+		InitLogger(nil)
+		return fmt.Errorf("ioutil.ReadFile(file:%s) = error:%v", logConfFile, err)
+	}
+
+	conf := &zap.Config{}
+	err = yaml.Unmarshal(confFileStream, conf)
+	if err != nil {
+		InitLogger(nil)
+		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("ErrorOutputPahts -->", conf.ErrorOutputPaths)
+	InitLogger(conf)
+
+	return nil
+}
+
+func InitLogger(conf *zap.Config) {
+	var zapLoggerConfig zap.Config
+	if conf == nil {
+		zapLoggerConfig = zap.NewDevelopmentConfig()
+		zapLoggerEncoderConfig := zapcore.EncoderConfig{
+			TimeKey:        "time",
+			LevelKey:       "level",
+			NameKey:        "logger",
+			CallerKey:      "caller",
+			MessageKey:     "message",
+			StacktraceKey:  "stacktrace",
+			EncodeTime:     zapcore.ISO8601TimeEncoder,
+			EncodeDuration: zapcore.SecondsDurationEncoder,
+			EncodeCaller:   zapcore.ShortCallerEncoder,
+		}
+		zapLoggerConfig.EncoderConfig = zapLoggerEncoderConfig
+	} else {
+		zapLoggerConfig = *conf
+	}
+	zapLogger, _ := zapLoggerConfig.Build(zap.AddCallerSkip(1))
+	//logger = zapLogger.Sugar()
+	logger = &YLogger{Logger: zapLogger.Sugar(), dynamicLevel: zapLoggerConfig.Level}
+}
+
+func SetLogger(log Logger) {
+	logger = log
+}
+
+func GetLogger() Logger {
+	return logger
+}
+
+func SetLoggerLevel(level string) bool {
+	if l, ok := logger.(OpsLogger); ok {
+		l.SetLoggerLevel(level)
+		return true
+	}
+	return false
+}
+
+type OpsLogger interface {
+	Logger
+	SetLoggerLevel(level string)
+}
+
+func (dl *YLogger) SetLoggerLevel(level string) {
+	l := new(zapcore.Level)
+	l.Set(level)
+	dl.dynamicLevel.SetLevel(*l)
+}
diff --git a/logging.go b/logging.go
new file mode 100644
index 0000000..71f03d6
--- /dev/null
+++ b/logging.go
@@ -0,0 +1,26 @@
+package log
+
+func Info(args ...interface{}) {
+	logger.Info(args...)
+}
+func Warn(args ...interface{}) {
+	logger.Warn(args...)
+}
+func Error(args ...interface{}) {
+	logger.Error(args...)
+}
+func Debug(args ...interface{}) {
+	logger.Debug(args...)
+}
+func Infof(fmt string, args ...interface{}) {
+	logger.Infof(fmt, args...)
+}
+func Warnf(fmt string, args ...interface{}) {
+	logger.Warnf(fmt, args...)
+}
+func Errorf(fmt string, args ...interface{}) {
+	logger.Errorf(fmt, args...)
+}
+func Debugf(fmt string, args ...interface{}) {
+	logger.Debugf(fmt, args...)
+}