diff --git a/README.md b/README.md
index bf7a2ce..f2a2a29 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ func init() {
     // 如果配置读写分离集群,则使用&gorose.ConfigCluster{}
 	engin, err = gorose.Open(&gorose.Config{Driver: "sqlite3", Dsn: "./db.sqlite"})
     // mysql示例, 记得导入mysql驱动 github.com/go-sql-driver/mysql
-	// engin, err = gorose.Open(&gorose.Config{Driver: "mysql", Dsn: "root:root@tcp(localhost:3306)/test?charset=utf8&parseTime=true"})
+	// engin, err = gorose.Open(&gorose.Config{Driver: "mysql", Dsn: "root:root@tcp(localhost:3306)/test?charset=utf8mb4&parseTime=true"})
 }
 func DB() gorose.IOrm {
 	return engin.NewOrm()
diff --git a/README_en.md b/README_en.md
index 1e8dc39..da4d5b6 100644
--- a/README_en.md
+++ b/README_en.md
@@ -86,7 +86,7 @@ func init() {
     // If you configure a read-write separation cluster, use & gorose. ConfigCluster {}
 	engin, err = gorose.Open(&gorose.Config{Driver: "sqlite3", Dsn: "./db.sqlite"})
     // mysql demo, remeber import mysql driver of github.com/go-sql-driver/mysql
-	// engin, err = gorose.Open(&gorose.Config{Driver: "mysql", Dsn: "root:root@tcp(localhost:3306)/test?charset=utf8&parseTime=true"})
+	// engin, err = gorose.Open(&gorose.Config{Driver: "mysql", Dsn: "root:root@tcp(localhost:3306)/test?charset=utf8mb4&parseTime=true"})
 }
 func DB() gorose.IOrm {
 	return engin.NewOrm()
diff --git a/binder.go b/binder.go
index a950e8e..770c81c 100644
--- a/binder.go
+++ b/binder.go
@@ -119,7 +119,7 @@ func (o *Binder) BindParse(prefix string) error {
 			o.parseFields()
 			// 是否设置了表名
 			switch dstVal.Kind() {
-			case reflect.Ptr,reflect.Struct:
+			case reflect.Ptr, reflect.Struct:
 				if tn := dstVal.MethodByName("TableName"); tn.IsValid() {
 					BindName = tn.Call(nil)[0].String()
 				}
@@ -177,7 +177,7 @@ func (o *Binder) BindParse(prefix string) error {
 
 				// 是否设置了表名
 				switch dstVal.Kind() {
-				case reflect.Ptr,reflect.Struct:
+				case reflect.Ptr, reflect.Struct:
 					if tn := br.MethodByName("TableName"); tn.IsValid() {
 						BindName = tn.Call(nil)[0].String()
 					}
diff --git a/config.go b/config.go
index 227cb70..af9f50e 100644
--- a/config.go
+++ b/config.go
@@ -4,7 +4,7 @@ package gorose
 type Config struct {
 	Driver string `json:"driver"` // 驱动: mysql/sqlite3/oracle/mssql/postgres/clickhouse, 如果集群配置了驱动, 这里可以省略
 	// mysql 示例:
-	// root:root@tcp(localhost:3306)/test?charset=utf8&parseTime=true
+	// root:root@tcp(localhost:3306)/test?charset=utf8mb4&parseTime=true
 	Dsn             string `json:"dsn"`             // 数据库链接
 	SetMaxOpenConns int    `json:"setMaxOpenConns"` // (连接池)最大打开的连接数，默认值为0表示不限制
 	SetMaxIdleConns int    `json:"setMaxIdleConns"` // (连接池)闲置的连接数, 默认0
diff --git a/engin.go b/engin.go
index 2bb9a24..9157762 100644
--- a/engin.go
+++ b/engin.go
@@ -124,7 +124,7 @@ func (c *Engin) GetLogger() ILogger {
 }
 
 // SetLogger ...
-func (c *Engin) SetLogger(lg ILogger)  {
+func (c *Engin) SetLogger(lg ILogger) {
 	c.logger = lg
 }
 
@@ -140,10 +140,10 @@ func (c *Engin) bootCluster() error {
 	//fmt.Println(len(c.config.Slave))
 	if len(c.config.Slave) > 0 {
 		for _, item := range c.config.Slave {
-			if c.config.Driver!=""{
+			if c.config.Driver != "" {
 				item.Driver = c.config.Driver
 			}
-			if c.config.Prefix!=""{
+			if c.config.Prefix != "" {
 				item.Prefix = c.config.Prefix
 			}
 			db, err := c.bootReal(item)
@@ -161,10 +161,10 @@ func (c *Engin) bootCluster() error {
 	var pre, dr string
 	if len(c.config.Master) > 0 {
 		for _, item := range c.config.Master {
-			if c.config.Driver!=""{
+			if c.config.Driver != "" {
 				item.Driver = c.config.Driver
 			}
-			if c.config.Prefix!=""{
+			if c.config.Prefix != "" {
 				item.Prefix = c.config.Prefix
 			}
 			db, err := c.bootReal(item)
@@ -201,7 +201,7 @@ func (c *Engin) bootCluster() error {
 
 // boot sql driver
 func (c *Engin) bootReal(dbConf Config) (db *sql.DB, err error) {
-	//db, err = sql.Open("mysql", "root:root@tcp(localhost:3306)/test?charset=utf8")
+	//db, err = sql.Open("mysql", "root:root@tcp(localhost:3306)/test?charset=utf8mb4")
 	// 开始驱动
 	db, err = sql.Open(dbConf.Driver, dbConf.Dsn)
 	if err != nil {
diff --git a/engin_test.go b/engin_test.go
index 7182686..99adc18 100644
--- a/engin_test.go
+++ b/engin_test.go
@@ -32,9 +32,9 @@ func (u *UsersMapSlice) TableName() string {
 }
 
 type Users struct {
-	Uid  int64    `orm:"uid"`
+	Uid  int64  `orm:"uid"`
 	Name string `orm:"name"`
-	Age  int64    `orm:"age"`
+	Age  int64  `orm:"age"`
 	Fi   string `orm:"ignore"`
 }
 
diff --git a/err.go b/err.go
index 0995fcd..086861d 100644
--- a/err.go
+++ b/err.go
@@ -58,9 +58,9 @@ type Err struct {
 //var gOnce *sync.Once
 var gErr *Err
 
-func init()  {
+func init() {
 	var tmpLang = make(map[Lang]map[Error]string)
-	gErr = &Err{err:tmpLang}
+	gErr = &Err{err: tmpLang}
 	gErr.lang = CHINESE
 	gErr.Register(gErr.Default())
 }
diff --git a/examples/cluster.go b/examples/cluster.go
index 6c4ec35..33332d7 100644
--- a/examples/cluster.go
+++ b/examples/cluster.go
@@ -13,17 +13,17 @@ func main() {
 	var config3 = gorose.Config{Dsn: "./db3.sqlite"}
 	var config4 = gorose.Config{Dsn: "./db4.sqlite"}
 	var configCluster = &gorose.ConfigCluster{
-		Master:  []gorose.Config{config3, config4},
-		Slave: []gorose.Config{config1, config2},
+		Master: []gorose.Config{config3, config4},
+		Slave:  []gorose.Config{config1, config2},
 		Driver: "sqlite3",
 	}
 	engin, err := gorose.Open(configCluster)
-	if err!=nil {
+	if err != nil {
 		panic(err.Error())
 	}
-	for i:=0;i<5;i++{
+	for i := 0; i < 5; i++ {
 		db := engin.NewOrm()
-		res,err := db.Table("users").First()
+		res, err := db.Table("users").First()
 		fmt.Println(err)
 		fmt.Println(res)
 	}
diff --git a/examples/dbobj/db.go b/examples/dbobj/db.go
index 24578f0..77cf7b6 100644
--- a/examples/dbobj/db.go
+++ b/examples/dbobj/db.go
@@ -11,7 +11,7 @@ func GetMysqlEngin() *gorose.Engin {
 	var engin *gorose.Engin
 	engin, err = gorose.Open(&gorose.Config{
 		Driver: "mysql",
-		Dsn:    "root:123456@tcp(localhost:3306)/novel?charset=utf8mb4",
+		Dsn:    "root:123456@tcp(localhost:3306)/test?charset=utf8mb4",
 		Prefix: "nv_",
 	})
 	if err != nil {
diff --git a/examples/error_case.go b/examples/error_case.go
index 3a702bb..e387029 100644
--- a/examples/error_case.go
+++ b/examples/error_case.go
@@ -14,7 +14,7 @@ func main() {
 	var res interface{}
 	var err error
 	db := getdb()
-	res,err = db.Table("users").Insert(gorose.Data{"uid2":222})
+	res, err = db.Table("users").Insert(gorose.Data{"uid2": 222})
 	if err != nil {
 		fmt.Println("0 - err:", err.Error())
 	}
diff --git a/examples/insert.go b/examples/insert.go
index 2bbee1d..544b160 100644
--- a/examples/insert.go
+++ b/examples/insert.go
@@ -9,15 +9,17 @@ import (
 
 var engin *gorose.Engin
 var err error
+
 func init() {
-	engin, err = gorose.Open(&gorose.Config{Prefix: "nv_", Driver: "mysql", Dsn: "root:123456@tcp(localhost:3306)/novel?charset=utf8&parseTime=true"})
-	if err!=nil {
+	engin, err = gorose.Open(&gorose.Config{Prefix: "nv_", Driver: "mysql", Dsn: "root:123456@tcp(localhost:3306)/test?charset=utf8mb4&parseTime=true"})
+	if err != nil {
 		panic(err.Error())
 	}
 }
 func db() gorose.IOrm {
 	return engin.NewOrm()
 }
+
 type Tag struct {
 	Id        int64     `gorose:"id" json:"id"`
 	TagTitle  string    `gorose:"tag_title" json:"tag_title"`
diff --git a/examples/logger.go b/examples/logger.go
index c73da0a..db7232b 100644
--- a/examples/logger.go
+++ b/examples/logger.go
@@ -25,9 +25,9 @@ func initDB() *gorose.Engin {
 
 	return e
 }
-func main()  {
+func main() {
 	db := initDB().NewOrm()
-	res,err := db.Table("users").First()
+	res, err := db.Table("users").First()
 	fmt.Println(err)
 	fmt.Println(db.LastSql())
 	fmt.Println(res)
diff --git a/examples/transaction.go b/examples/transaction.go
index c032ebf..80e40ad 100644
--- a/examples/transaction.go
+++ b/examples/transaction.go
@@ -6,12 +6,12 @@ import (
 	"github.com/gohouse/gorose/v2"
 )
 
-func initEngin()*gorose.Engin {
+func initEngin() *gorose.Engin {
 	var err error
 	var engin *gorose.Engin
 	engin, err = gorose.Open(&gorose.Config{
 		Driver: "mysql",
-		Dsn:    "root:123456@tcp(localhost:3306)/novel?charset=utf8mb4",
+		Dsn:    "root:123456@tcp(localhost:3306)/test?charset=utf8mb4",
 		Prefix: "nv_",
 	})
 	if err != nil {
@@ -31,17 +31,17 @@ func trans() error {
 	db := engin.NewOrm()
 	db.Begin()
 	aff, err = db.Table("logs").Insert(gorose.Data{"username": "xx"})
-	if err != nil || aff==0 {
+	if err != nil || aff == 0 {
 		db.Rollback()
 		return err
 	}
-	aff, err = db.Table("logs").Where("id",2).Update(gorose.Data{"username": "xx1232xx1232xx1232xx1232xx1232xx1232xx1232xx1232"})
-	if err != nil || aff==0 {
+	aff, err = db.Table("logs").Where("id", 2).Update(gorose.Data{"username": "xx1232xx1232xx1232xx1232xx1232xx1232xx1232xx1232"})
+	if err != nil || aff == 0 {
 		db.Rollback()
 		return err
 	}
 	aff, err = db.Table("logs").Insert(gorose.Data{"username": "xx", "pkid": 1})
-	if err != nil || aff==0 {
+	if err != nil || aff == 0 {
 		db.Rollback()
 		return err
 	}
diff --git a/logger.go b/logger.go
index 26c1864..10816d3 100644
--- a/logger.go
+++ b/logger.go
@@ -56,13 +56,13 @@ var logger *Logger
 // NewLogger ...
 func NewLogger(o *LogOption) *Logger {
 	//onceLogger.Do(func() {
-		logger = &Logger{filePath: "./"}
-		if o.FilePath != "" {
-			logger.filePath = o.FilePath
-		}
-		logger.sqlLog = o.EnableSqlLog
-		logger.slowLog = o.EnableSlowLog
-		logger.errLog = o.EnableErrorLog
+	logger = &Logger{filePath: "./"}
+	if o.FilePath != "" {
+		logger.filePath = o.FilePath
+	}
+	logger.sqlLog = o.EnableSqlLog
+	logger.slowLog = o.EnableSlowLog
+	logger.errLog = o.EnableErrorLog
 	//})
 	return logger
 }
diff --git a/orm_api.go b/orm_api.go
index 6b1c746..5aa0851 100644
--- a/orm_api.go
+++ b/orm_api.go
@@ -2,14 +2,14 @@ package gorose
 
 // OrmApi ...
 type OrmApi struct {
-	table     string
-	fields    []string
-	where     [][]interface{}
-	order     string
-	limit     int
-	offset    int
-	join      [][]interface{}
-	distinct  bool
+	table    string
+	fields   []string
+	where    [][]interface{}
+	order    string
+	limit    int
+	offset   int
+	join     [][]interface{}
+	distinct bool
 	//union     string
 	group     string
 	having    string
diff --git a/orm_execute.go b/orm_execute.go
index 5d2b9eb..49d3b40 100644
--- a/orm_execute.go
+++ b/orm_execute.go
@@ -60,7 +60,7 @@ func (dba *Orm) exec(operType string, data ...interface{}) (int64, error) {
 		rl2 := reflect.Indirect(rl)
 
 		switch rl2.Kind() {
-		case reflect.Struct,reflect.Ptr:
+		case reflect.Struct, reflect.Ptr:
 			//return 0, errors.New("传入的结构体必须是对象的地址")
 			if tn := rl2.MethodByName("TableName"); tn.IsValid() {
 				dba.Table(dba.GetData())
@@ -76,7 +76,7 @@ func (dba *Orm) exec(operType string, data ...interface{}) (int64, error) {
 			r2 := rl2.Type().Elem()
 			r2val := reflect.New(r2)
 			switch r2val.Kind() {
-			case reflect.Struct,reflect.Ptr:
+			case reflect.Struct, reflect.Ptr:
 				if tn := r2val.MethodByName("TableName"); tn.IsValid() {
 					dba.Table(dba.GetData())
 				}
@@ -85,7 +85,7 @@ func (dba *Orm) exec(operType string, data ...interface{}) (int64, error) {
 					dba.Table(dba.GetData())
 				}
 			default:
-				return 0,errors.New("表名有误")
+				return 0, errors.New("表名有误")
 			}
 		}
 
diff --git a/orm_execute_test.go b/orm_execute_test.go
index c300322..935ed3d 100644
--- a/orm_execute_test.go
+++ b/orm_execute_test.go
@@ -28,7 +28,7 @@ func TestOrm_Update2(t *testing.T) {
 	//	Age:  11,
 	//}}
 
-	aff, err := db.Table("users").Where("uid",1).Update()
+	aff, err := db.Table("users").Where("uid", 1).Update()
 	if err != nil {
 		//t.Error(err.Error())
 		t.Log(err.Error())
diff --git a/orm_query.go b/orm_query.go
index ad061ee..9208bc4 100644
--- a/orm_query.go
+++ b/orm_query.go
@@ -9,8 +9,8 @@ import (
 
 // Select : select one or more rows , relation limit set
 func (dba *Orm) Select() error {
-	switch dba.GetIBinder().GetBindType(){
-	case OBJECT_STRUCT,OBJECT_MAP,OBJECT_MAP_T:
+	switch dba.GetIBinder().GetBindType() {
+	case OBJECT_STRUCT, OBJECT_MAP, OBJECT_MAP_T:
 		dba.Limit(1)
 	}
 	// 构建sql
@@ -95,6 +95,7 @@ func (dba *Orm) _unionBuild(union, field string) (interface{}, error) {
 	}
 	return 0, err
 }
+
 //func (dba *Orm) _unionBuild_bak(union, field string) (interface{}, error) {
 //	var tmp interface{}
 //
diff --git a/orm_query_test.go b/orm_query_test.go
index d1f873a..2f49197 100644
--- a/orm_query_test.go
+++ b/orm_query_test.go
@@ -11,7 +11,7 @@ func TestOrm_BuildSql2(t *testing.T) {
 	db := DB()
 	var u = "age=age+1,num=num+1"
 	var wheres interface{}
-	wheres = [][]interface{}{{"a", ">", "b"}, {"a", "b"},{"a is null"}}
+	wheres = [][]interface{}{{"a", ">", "b"}, {"a", "b"}, {"a is null"}}
 	sqlstr, a, b := db.Force().Table("users").Data(u).Where(wheres).BuildSql("update")
 
 	t.Log(sqlstr, a, b)
@@ -31,9 +31,9 @@ func TestOrm_BuildSql4(t *testing.T) {
 	db := DB()
 	//var wheres interface{}
 	//wheres = [][]interface{}{{"a", ">", "b"},{"lock",1}}
-	wheres := Data{"lock":1}
+	wheres := Data{"lock": 1}
 	sqlstr, a, b := db.Table(Users{}).Where(wheres).Where(func() {
-		db.Where("c",2).OrWhere("lock",">",4)
+		db.Where("c", 2).OrWhere("lock", ">", 4)
 	}).BuildSql()
 
 	t.Log(sqlstr, a, b)
@@ -71,12 +71,12 @@ func TestOrm_BuildSql6(t *testing.T) {
 		Name: "2",
 		Age:  3,
 	}
-	res,err := db.Table("xxx").Where("xx","xx").Update(&u)
-	t.Log(db.LastSql(), res,err)
+	res, err := db.Table("xxx").Where("xx", "xx").Update(&u)
+	t.Log(db.LastSql(), res, err)
 }
 
 func TestOrm_First(t *testing.T) {
-	res, err := DB().Table(Users{}).Where("uid",1).First()
+	res, err := DB().Table(Users{}).Where("uid", 1).First()
 	if err != nil {
 		t.Error(err.Error())
 	}
@@ -190,7 +190,7 @@ func TestOrm_Pluck(t *testing.T) {
 	//var u []Users
 	ormObj := orm.Table("users")
 	//res,err := ormObj.Pluck("name", "uid")
-	res, err := ormObj.Limit(5).Pluck("name","uid")
+	res, err := ormObj.Limit(5).Pluck("name", "uid")
 	if err != nil {
 		t.Error(err.Error())
 	}
@@ -314,7 +314,7 @@ func TestOrm_Paginate2(t *testing.T) {
 	db := DB()
 
 	var u []Users
-	res, err := db.Table(&u).Where("uid",">",1).Limit(2).Paginate(3)
+	res, err := db.Table(&u).Where("uid", ">", 1).Limit(2).Paginate(3)
 	if err != nil {
 		t.Error(err.Error())
 	}
@@ -327,7 +327,7 @@ func TestOrm_Sum(t *testing.T) {
 
 	var u Users
 	//res, err := db.Table(Users{}).First()
-	res, err := db.Table(&u).Where(Data{"uid":1}).Sum("age")
+	res, err := db.Table(&u).Where(Data{"uid": 1}).Sum("age")
 	if err != nil {
 		t.Error(err.Error())
 	}
diff --git a/util.go b/util.go
index 6127e3f..8b8bdc7 100644
--- a/util.go
+++ b/util.go
@@ -103,7 +103,7 @@ func addQuotes(data interface{}, sep string) string {
 func addBackticks(arg string) string {
 	reg := regexp.MustCompile(`^\w+$`)
 	if reg.MatchString(arg) {
-		return fmt.Sprintf("`%s`",arg)
+		return fmt.Sprintf("`%s`", arg)
 	}
 	return arg
 }