diff --git a/pkg/orm/db_alias.go b/pkg/orm/db_alias.go
index bf6c350c97c15d9ada6e315d77d79d931957445e..b2a72f56db0e9ef75c963af479fe708cc2d1a311 100644
--- a/pkg/orm/db_alias.go
+++ b/pkg/orm/db_alias.go
@@ -111,6 +111,9 @@ type DB struct {
 	stmtDecorators *lru.Cache
 }
 
+var _ dbQuerier = new(DB)
+var _ txer = new(DB)
+
 func (d *DB) Begin() (*sql.Tx, error) {
 	return d.DB.Begin()
 }
@@ -220,6 +223,56 @@ func (d *DB) QueryRowContext(ctx context.Context, query string, args ...interfac
 	return stmt.QueryRowContext(ctx, args)
 }
 
+type TxDB struct {
+	tx *sql.Tx
+}
+
+var _ dbQuerier = new(TxDB)
+var _ txEnder = new(TxDB)
+
+func (t *TxDB) Commit() error {
+	return t.tx.Commit()
+}
+
+func (t *TxDB) Rollback() error {
+	return t.tx.Rollback()
+}
+
+var _ dbQuerier = new(TxDB)
+var _ txEnder = new(TxDB)
+
+func (t *TxDB) Prepare(query string) (*sql.Stmt, error) {
+	return t.PrepareContext(context.Background(),query)
+}
+
+func (t *TxDB) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
+	return t.tx.PrepareContext(ctx, query)
+}
+
+func (t *TxDB) Exec(query string, args ...interface{}) (sql.Result, error) {
+	return t.ExecContext(context.Background(), query, args...)
+}
+
+func (t *TxDB) ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error) {
+	return t.tx.ExecContext(ctx, query, args...)
+}
+
+func (t *TxDB) Query(query string, args ...interface{}) (*sql.Rows, error) {
+	return t.QueryContext(context.Background(),query,args...)
+}
+
+func (t *TxDB) QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) {
+	return t.tx.QueryContext(ctx, query, args...)
+}
+
+func (t *TxDB) QueryRow(query string, args ...interface{}) *sql.Row {
+	return t.QueryRowContext(context.Background(),query,args...)
+}
+
+func (t *TxDB) QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row {
+	return t.tx.QueryRowContext(ctx, query, args...)
+}
+
 type alias struct {
 	Name         string
 	Driver       DriverType
diff --git a/pkg/orm/orm.go b/pkg/orm/orm.go
index bd2cb783a07ed629a827915538beb1c6560c7968..8ef761f4e51bc46b9523d525371a66f7528da1e4 100644
--- a/pkg/orm/orm.go
+++ b/pkg/orm/orm.go
@@ -62,6 +62,8 @@ import (
 	"reflect"
 	"sync"
 	"time"
+
+	"github.com/astaxie/beego/logs"
 )
 
 // DebugQueries define the debug
@@ -76,8 +78,7 @@ var (
 	DefaultRowsLimit = -1
 	DefaultRelsDepth = 2
 	DefaultTimeLoc   = time.Local
-	ErrTxHasBegan    = errors.New("<Ormer.Begin> transaction already begin")
-	ErrTxDone        = errors.New("<Ormer.Commit/Rollback> transaction not begin")
+	ErrTxDone        = errors.New("<TxOrmer.Commit/Rollback> transaction already done")
 	ErrMultiRows     = errors.New("<QuerySeter> return multi rows")
 	ErrNoRows        = errors.New("<QuerySeter> no row found")
 	ErrStmtClosed    = errors.New("<QuerySeter> stmt already closed")
@@ -91,16 +92,16 @@ type Params map[string]interface{}
 // ParamsList stores paramslist
 type ParamsList []interface{}
 
-type orm struct {
+type ormBase struct {
 	alias *alias
 	db    dbQuerier
-	isTx  bool
 }
 
-var _ Ormer = new(orm)
+var _ DQL = new(ormBase)
+var _ DML = new(ormBase)
 
 // get model info and model reflect value
-func (o *orm) getMiInd(md interface{}, needPtr bool) (mi *modelInfo, ind reflect.Value) {
+func (o *ormBase) getMiInd(md interface{}, needPtr bool) (mi *modelInfo, ind reflect.Value) {
 	val := reflect.ValueOf(md)
 	ind = reflect.Indirect(val)
 	typ := ind.Type()
@@ -115,7 +116,7 @@ func (o *orm) getMiInd(md interface{}, needPtr bool) (mi *modelInfo, ind reflect
 }
 
 // get field info from model info by given field name
-func (o *orm) getFieldInfo(mi *modelInfo, name string) *fieldInfo {
+func (o *ormBase) getFieldInfo(mi *modelInfo, name string) *fieldInfo {
 	fi, ok := mi.fields.GetByAny(name)
 	if !ok {
 		panic(fmt.Errorf("<Ormer> cannot find field `%s` for model `%s`", name, mi.fullName))
@@ -124,33 +125,42 @@ func (o *orm) getFieldInfo(mi *modelInfo, name string) *fieldInfo {
 }
 
 // read data to model
-func (o *orm) Read(md interface{}, cols ...string) error {
+func (o *ormBase) Read(md interface{}, cols ...string) error {
+	return o.ReadWithCtx(context.Background(), md, cols...)
+}
+func (o *ormBase) ReadWithCtx(ctx context.Context, md interface{}, cols ...string) error {
 	mi, ind := o.getMiInd(md, true)
 	return o.alias.DbBaser.Read(o.db, mi, ind, o.alias.TZ, cols, false)
 }
 
 // read data to model, like Read(), but use "SELECT FOR UPDATE" form
-func (o *orm) ReadForUpdate(md interface{}, cols ...string) error {
+func (o *ormBase) ReadForUpdate(md interface{}, cols ...string) error {
+	return o.ReadForUpdateWithCtx(context.Background(), md, cols...)
+}
+func (o *ormBase) ReadForUpdateWithCtx(ctx context.Context, md interface{}, cols ...string) error {
 	mi, ind := o.getMiInd(md, true)
 	return o.alias.DbBaser.Read(o.db, mi, ind, o.alias.TZ, cols, true)
 }
 
 // Try to read a row from the database, or insert one if it doesn't exist
-func (o *orm) ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, int64, error) {
+func (o *ormBase) ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, int64, error) {
+	return o.ReadOrCreateWithCtx(context.Background(), md, col1, cols...)
+}
+func (o *ormBase) ReadOrCreateWithCtx(ctx context.Context, md interface{}, col1 string, cols ...string) (bool, int64, error) {
 	cols = append([]string{col1}, cols...)
 	mi, ind := o.getMiInd(md, true)
 	err := o.alias.DbBaser.Read(o.db, mi, ind, o.alias.TZ, cols, false)
 	if err == ErrNoRows {
 		// Create
-		id, err := o.Insert(md)
-		return (err == nil), id, err
+		id, err := o.InsertWithCtx(ctx, md)
+		return err == nil, id, err
 	}
 
 	id, vid := int64(0), ind.FieldByIndex(mi.fields.pk.fieldIndex)
 	if mi.fields.pk.fieldType&IsPositiveIntegerField > 0 {
 		id = int64(vid.Uint())
 	} else if mi.fields.pk.rel {
-		return o.ReadOrCreate(vid.Interface(), mi.fields.pk.relModelInfo.fields.pk.name)
+		return o.ReadOrCreateWithCtx(ctx, vid.Interface(), mi.fields.pk.relModelInfo.fields.pk.name)
 	} else {
 		id = vid.Int()
 	}
@@ -159,7 +169,10 @@ func (o *orm) ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, i
 }
 
 // insert model data to database
-func (o *orm) Insert(md interface{}) (int64, error) {
+func (o *ormBase) Insert(md interface{}) (int64, error) {
+	return o.InsertWithCtx(context.Background(), md)
+}
+func (o *ormBase) InsertWithCtx(ctx context.Context, md interface{}) (int64, error) {
 	mi, ind := o.getMiInd(md, true)
 	id, err := o.alias.DbBaser.Insert(o.db, mi, ind, o.alias.TZ)
 	if err != nil {
@@ -172,7 +185,7 @@ func (o *orm) Insert(md interface{}) (int64, error) {
 }
 
 // set auto pk field
-func (o *orm) setPk(mi *modelInfo, ind reflect.Value, id int64) {
+func (o *ormBase) setPk(mi *modelInfo, ind reflect.Value, id int64) {
 	if mi.fields.pk.auto {
 		if mi.fields.pk.fieldType&IsPositiveIntegerField > 0 {
 			ind.FieldByIndex(mi.fields.pk.fieldIndex).SetUint(uint64(id))
@@ -183,7 +196,10 @@ func (o *orm) setPk(mi *modelInfo, ind reflect.Value, id int64) {
 }
 
 // insert some models to database
-func (o *orm) InsertMulti(bulk int, mds interface{}) (int64, error) {
+func (o *ormBase) InsertMulti(bulk int, mds interface{}) (int64, error) {
+	return o.InsertMultiWithCtx(context.Background(), bulk, mds)
+}
+func (o *ormBase) InsertMultiWithCtx(ctx context.Context, bulk int, mds interface{}) (int64, error) {
 	var cnt int64
 
 	sind := reflect.Indirect(reflect.ValueOf(mds))
@@ -218,7 +234,10 @@ func (o *orm) InsertMulti(bulk int, mds interface{}) (int64, error) {
 }
 
 // InsertOrUpdate data to database
-func (o *orm) InsertOrUpdate(md interface{}, colConflitAndArgs ...string) (int64, error) {
+func (o *ormBase) InsertOrUpdate(md interface{}, colConflictAndArgs ...string) (int64, error) {
+	return o.InsertOrUpdateWithCtx(context.Background(), md, colConflictAndArgs...)
+}
+func (o *ormBase) InsertOrUpdateWithCtx(ctx context.Context, md interface{}, colConflitAndArgs ...string) (int64, error) {
 	mi, ind := o.getMiInd(md, true)
 	id, err := o.alias.DbBaser.InsertOrUpdate(o.db, mi, ind, o.alias, colConflitAndArgs...)
 	if err != nil {
@@ -232,14 +251,20 @@ func (o *orm) InsertOrUpdate(md interface{}, colConflitAndArgs ...string) (int64
 
 // update model to database.
 // cols set the columns those want to update.
-func (o *orm) Update(md interface{}, cols ...string) (int64, error) {
+func (o *ormBase) Update(md interface{}, cols ...string) (int64, error) {
+	return o.UpdateWithCtx(context.Background(), md, cols...)
+}
+func (o *ormBase) UpdateWithCtx(ctx context.Context, md interface{}, cols ...string) (int64, error) {
 	mi, ind := o.getMiInd(md, true)
 	return o.alias.DbBaser.Update(o.db, mi, ind, o.alias.TZ, cols)
 }
 
 // delete model in database
 // cols shows the delete conditions values read from. default is pk
-func (o *orm) Delete(md interface{}, cols ...string) (int64, error) {
+func (o *ormBase) Delete(md interface{}, cols ...string) (int64, error) {
+	return o.DeleteWithCtx(context.Background(), md, cols...)
+}
+func (o *ormBase) DeleteWithCtx(ctx context.Context, md interface{}, cols ...string) (int64, error) {
 	mi, ind := o.getMiInd(md, true)
 	num, err := o.alias.DbBaser.Delete(o.db, mi, ind, o.alias.TZ, cols)
 	if err != nil {
@@ -252,7 +277,10 @@ func (o *orm) Delete(md interface{}, cols ...string) (int64, error) {
 }
 
 // create a models to models queryer
-func (o *orm) QueryM2M(md interface{}, name string) QueryM2Mer {
+func (o *ormBase) QueryM2M(md interface{}, name string) QueryM2Mer {
+	return o.QueryM2MWithCtx(context.Background(), md, name)
+}
+func (o *ormBase) QueryM2MWithCtx(ctx context.Context, md interface{}, name string) QueryM2Mer {
 	mi, ind := o.getMiInd(md, true)
 	fi := o.getFieldInfo(mi, name)
 
@@ -274,7 +302,10 @@ func (o *orm) QueryM2M(md interface{}, name string) QueryM2Mer {
 // 	for _,tag := range post.Tags{...}
 //
 // make sure the relation is defined in model struct tags.
-func (o *orm) LoadRelated(md interface{}, name string, args ...interface{}) (int64, error) {
+func (o *ormBase) LoadRelated(md interface{}, name string, args ...interface{}) (int64, error) {
+	return o.LoadRelatedWithCtx(context.Background(), md, name, args...)
+}
+func (o *ormBase) LoadRelatedWithCtx(ctx context.Context, md interface{}, name string, args ...interface{}) (int64, error) {
 	_, fi, ind, qseter := o.queryRelated(md, name)
 
 	qs := qseter.(*querySet)
@@ -341,14 +372,17 @@ func (o *orm) LoadRelated(md interface{}, name string, args ...interface{}) (int
 // 	qs := orm.QueryRelated(post,"Tag")
 //  qs.All(&[]*Tag{})
 //
-func (o *orm) QueryRelated(md interface{}, name string) QuerySeter {
+func (o *ormBase) QueryRelated(md interface{}, name string) QuerySeter {
+	return o.QueryRelatedWithCtx(context.Background(), md, name)
+}
+func (o *ormBase) QueryRelatedWithCtx(ctx context.Context, md interface{}, name string) QuerySeter {
 	// is this api needed ?
 	_, _, _, qs := o.queryRelated(md, name)
 	return qs
 }
 
 // get QuerySeter for related models to md model
-func (o *orm) queryRelated(md interface{}, name string) (*modelInfo, *fieldInfo, reflect.Value, QuerySeter) {
+func (o *ormBase) queryRelated(md interface{}, name string) (*modelInfo, *fieldInfo, reflect.Value, QuerySeter) {
 	mi, ind := o.getMiInd(md, true)
 	fi := o.getFieldInfo(mi, name)
 
@@ -380,7 +414,7 @@ func (o *orm) queryRelated(md interface{}, name string) (*modelInfo, *fieldInfo,
 }
 
 // get reverse relation QuerySeter
-func (o *orm) getReverseQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
+func (o *ormBase) getReverseQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
 	switch fi.fieldType {
 	case RelReverseOne, RelReverseMany:
 	default:
@@ -401,7 +435,7 @@ func (o *orm) getReverseQs(md interface{}, mi *modelInfo, fi *fieldInfo) *queryS
 }
 
 // get relation QuerySeter
-func (o *orm) getRelQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
+func (o *ormBase) getRelQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
 	switch fi.fieldType {
 	case RelOneToOne, RelForeignKey, RelManyToMany:
 	default:
@@ -423,7 +457,10 @@ func (o *orm) getRelQs(md interface{}, mi *modelInfo, fi *fieldInfo) *querySet {
 // return a QuerySeter for table operations.
 // table name can be string or struct.
 // e.g. QueryTable("user"), QueryTable(&user{}) or QueryTable((*User)(nil)),
-func (o *orm) QueryTable(ptrStructOrTableName interface{}) (qs QuerySeter) {
+func (o *ormBase) QueryTable(ptrStructOrTableName interface{}) (qs QuerySeter) {
+	return o.QueryTableWithCtx(context.Background(), ptrStructOrTableName)
+}
+func (o *ormBase) QueryTableWithCtx(ctx context.Context, ptrStructOrTableName interface{}) (qs QuerySeter) {
 	var name string
 	if table, ok := ptrStructOrTableName.(string); ok {
 		name = nameStrategyMap[defaultNameStrategy](table)
@@ -442,94 +479,113 @@ func (o *orm) QueryTable(ptrStructOrTableName interface{}) (qs QuerySeter) {
 	return
 }
 
-// switch to another registered database driver by given name.
-func (o *orm) Using(name string) error {
-	if o.isTx {
-		panic(fmt.Errorf("<Ormer.Using> transaction has been start, cannot change db"))
-	}
-	if al, ok := dataBaseCache.get(name); ok {
-		o.alias = al
-		if Debug {
-			o.db = newDbQueryLog(al, al.DB)
-		} else {
-			o.db = al.DB
-		}
-	} else {
-		return fmt.Errorf("<Ormer.Using> unknown db alias name `%s`", name)
+// return a raw query seter for raw sql string.
+func (o *ormBase) Raw(query string, args ...interface{}) RawSeter {
+	return o.RawWithCtx(context.Background(), query, args...)
+}
+func (o *ormBase) RawWithCtx(ctx context.Context, query string, args ...interface{}) RawSeter {
+	return newRawSet(o, query, args)
+}
+
+// return current using database Driver
+func (o *ormBase) Driver() Driver {
+	return driver(o.alias.Name)
+}
+
+// return sql.DBStats for current database
+func (o *ormBase) DBStats() *sql.DBStats {
+	if o.alias != nil && o.alias.DB != nil {
+		stats := o.alias.DB.DB.Stats()
+		return &stats
 	}
 	return nil
 }
 
-// begin transaction
-func (o *orm) Begin() error {
-	return o.BeginTx(context.Background(), nil)
+type orm struct {
+	ormBase
 }
 
-func (o *orm) BeginTx(ctx context.Context, opts *sql.TxOptions) error {
-	if o.isTx {
-		return ErrTxHasBegan
-	}
-	var tx *sql.Tx
+var _ Ormer = new(orm)
+
+func (o *orm) Begin() (TxOrmer, error) {
+	return o.BeginWithCtx(context.Background())
+}
+
+func (o *orm) BeginWithCtx(ctx context.Context) (TxOrmer, error) {
+	return o.BeginWithCtxAndOpts(ctx, nil)
+}
+
+func (o *orm) BeginWithOpts(opts *sql.TxOptions) (TxOrmer, error) {
+	return o.BeginWithCtxAndOpts(context.Background(), opts)
+}
+
+func (o *orm) BeginWithCtxAndOpts(ctx context.Context, opts *sql.TxOptions) (TxOrmer, error) {
 	tx, err := o.db.(txer).BeginTx(ctx, opts)
 	if err != nil {
-		return err
+		return nil, err
 	}
-	o.isTx = true
-	if Debug {
-		o.db.(*dbQueryLog).SetDB(tx)
-	} else {
-		o.db = tx
+
+	_txOrm := &txOrm{
+		ormBase: ormBase{
+			alias: o.alias,
+			db:    &TxDB{tx: tx},
+		},
 	}
-	return nil
+
+	var taskTxOrm TxOrmer = _txOrm
+	return taskTxOrm, nil
 }
 
-// commit transaction
-func (o *orm) Commit() error {
-	if !o.isTx {
-		return ErrTxDone
-	}
-	err := o.db.(txEnder).Commit()
-	if err == nil {
-		o.isTx = false
-		o.Using(o.alias.Name)
-	} else if err == sql.ErrTxDone {
-		return ErrTxDone
-	}
-	return err
+func (o *orm) DoTx(task func(txOrm TxOrmer) error) error {
+	return o.DoTxWithCtx(context.Background(), task)
 }
 
-// rollback transaction
-func (o *orm) Rollback() error {
-	if !o.isTx {
-		return ErrTxDone
-	}
-	err := o.db.(txEnder).Rollback()
-	if err == nil {
-		o.isTx = false
-		o.Using(o.alias.Name)
-	} else if err == sql.ErrTxDone {
-		return ErrTxDone
+func (o *orm) DoTxWithCtx(ctx context.Context, task func(txOrm TxOrmer) error) error {
+	return o.DoTxWithCtxAndOpts(ctx, nil, task)
+}
+
+func (o *orm) DoTxWithOpts(opts *sql.TxOptions, task func(txOrm TxOrmer) error) error {
+	return o.DoTxWithCtxAndOpts(context.Background(), opts, task)
+}
+
+func (o *orm) DoTxWithCtxAndOpts(ctx context.Context, opts *sql.TxOptions, task func(txOrm TxOrmer) error) error {
+	_txOrm, err := o.BeginWithCtxAndOpts(ctx, opts)
+	if err != nil {
+		return err
 	}
+	panicked := true
+	defer func() {
+		if panicked || err != nil {
+			e := _txOrm.Rollback()
+			if e != nil {
+				logs.Error("rollback transaction failed: %v,%v", e, panicked)
+			}
+		} else {
+			e := _txOrm.Commit()
+			if e != nil {
+				logs.Error("commit transaction failed: %v,%v", e, panicked)
+			}
+		}
+	}()
+
+	var taskTxOrm = _txOrm
+	err = task(taskTxOrm)
+	panicked = false
 	return err
 }
 
-// return a raw query seter for raw sql string.
-func (o *orm) Raw(query string, args ...interface{}) RawSeter {
-	return newRawSet(o, query, args)
+type txOrm struct {
+	ormBase
 }
 
-// return current using database Driver
-func (o *orm) Driver() Driver {
-	return driver(o.alias.Name)
+var _ TxOrmer = new(txOrm)
+
+func (t *txOrm) Commit() error {
+	return t.db.(txEnder).Commit()
 }
 
-// return sql.DBStats for current database
-func (o *orm) DBStats() *sql.DBStats {
-	if o.alias != nil && o.alias.DB != nil {
-		stats := o.alias.DB.DB.Stats()
-		return &stats
-	}
-	return nil
+func (t *txOrm) Rollback() error {
+	return t.db.(txEnder).Rollback()
 }
 
 // NewOrm create new orm
@@ -537,10 +593,18 @@ func NewOrm() Ormer {
 	BootStrap() // execute only once
 
 	o := new(orm)
-	err := o.Using("default")
-	if err != nil {
-		panic(err)
+	name := `default`
+	if al, ok := dataBaseCache.get(name); ok {
+		o.alias = al
+		if Debug {
+			o.db = newDbQueryLog(al, al.DB)
+		} else {
+			o.db = al.DB
+		}
+	} else {
+		panic(fmt.Errorf("<Ormer.Using> unknown db alias name `%s`", name))
 	}
+
 	return o
 }
 
diff --git a/pkg/orm/orm_object.go b/pkg/orm/orm_object.go
index de3181ce2b42279a8cb79a395167a7ab61240f20..6f9798d3e68b2eae31ab82a924bdf26007e5844d 100644
--- a/pkg/orm/orm_object.go
+++ b/pkg/orm/orm_object.go
@@ -22,7 +22,7 @@ import (
 // an insert queryer struct
 type insertSet struct {
 	mi     *modelInfo
-	orm    *orm
+	orm    *ormBase
 	stmt   stmtQuerier
 	closed bool
 }
@@ -70,7 +70,7 @@ func (o *insertSet) Close() error {
 }
 
 // create new insert queryer.
-func newInsertSet(orm *orm, mi *modelInfo) (Inserter, error) {
+func newInsertSet(orm *ormBase, mi *modelInfo) (Inserter, error) {
 	bi := new(insertSet)
 	bi.orm = orm
 	bi.mi = mi
diff --git a/pkg/orm/orm_querym2m.go b/pkg/orm/orm_querym2m.go
index 6a270a0d86d663fec9c11854ba668b5637c14fb8..17e1b5d19fe82c2940036ac6461a7e4f49cb2ec8 100644
--- a/pkg/orm/orm_querym2m.go
+++ b/pkg/orm/orm_querym2m.go
@@ -129,7 +129,7 @@ func (o *queryM2M) Count() (int64, error) {
 var _ QueryM2Mer = new(queryM2M)
 
 // create new M2M queryer.
-func newQueryM2M(md interface{}, o *orm, mi *modelInfo, fi *fieldInfo, ind reflect.Value) QueryM2Mer {
+func newQueryM2M(md interface{}, o *ormBase, mi *modelInfo, fi *fieldInfo, ind reflect.Value) QueryM2Mer {
 	qm2m := new(queryM2M)
 	qm2m.md = md
 	qm2m.mi = mi
diff --git a/pkg/orm/orm_queryset.go b/pkg/orm/orm_queryset.go
index 878b836b854dfae16bc2291d4ef4fcc600b28ec2..83168de71e9b6ef0badef0bee75136fe956e81fb 100644
--- a/pkg/orm/orm_queryset.go
+++ b/pkg/orm/orm_queryset.go
@@ -72,7 +72,7 @@ type querySet struct {
 	orders     []string
 	distinct   bool
 	forupdate  bool
-	orm        *orm
+	orm        *ormBase
 	ctx        context.Context
 	forContext bool
 }
@@ -292,7 +292,7 @@ func (o querySet) WithContext(ctx context.Context) QuerySeter {
 }
 
 // create new QuerySeter.
-func newQuerySet(orm *orm, mi *modelInfo) QuerySeter {
+func newQuerySet(orm *ormBase, mi *modelInfo) QuerySeter {
 	o := new(querySet)
 	o.mi = mi
 	o.orm = orm
diff --git a/pkg/orm/orm_raw.go b/pkg/orm/orm_raw.go
index 3325a7ea7174b35e2c25c44ab9c5d3e89a16ab68..5e05eded497aa8b5ba99054f0fece9cfe6da982e 100644
--- a/pkg/orm/orm_raw.go
+++ b/pkg/orm/orm_raw.go
@@ -63,7 +63,7 @@ func newRawPreparer(rs *rawSet) (RawPreparer, error) {
 type rawSet struct {
 	query string
 	args  []interface{}
-	orm   *orm
+	orm   *ormBase
 }
 
 var _ RawSeter = new(rawSet)
@@ -858,7 +858,7 @@ func (o *rawSet) Prepare() (RawPreparer, error) {
 	return newRawPreparer(o)
 }
 
-func newRawSet(orm *orm, query string, args []interface{}) RawSeter {
+func newRawSet(orm *ormBase, query string, args []interface{}) RawSeter {
 	o := new(rawSet)
 	o.query = query
 	o.args = args
diff --git a/pkg/orm/orm_test.go b/pkg/orm/orm_test.go
index eac7b33ad7f978ae4775398c3c7b170f420e4491..54ecc0fdd503defcaf0b2f721a8a6f1605ff5061 100644
--- a/pkg/orm/orm_test.go
+++ b/pkg/orm/orm_test.go
@@ -2026,24 +2026,24 @@ func TestTransaction(t *testing.T) {
 	// this test worked when database support transaction
 
 	o := NewOrm()
-	err := o.Begin()
+	to, err := o.Begin()
 	throwFail(t, err)
 
 	var names = []string{"1", "2", "3"}
 
 	var tag Tag
 	tag.Name = names[0]
-	id, err := o.Insert(&tag)
+	id, err := to.Insert(&tag)
 	throwFail(t, err)
 	throwFail(t, AssertIs(id > 0, true))
 
-	num, err := o.QueryTable("tag").Filter("name", "golang").Update(Params{"name": names[1]})
+	num, err := to.QueryTable("tag").Filter("name", "golang").Update(Params{"name": names[1]})
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 1))
 
 	switch {
 	case IsMysql || IsSqlite:
-		res, err := o.Raw("INSERT INTO tag (name) VALUES (?)", names[2]).Exec()
+		res, err := to.Raw("INSERT INTO tag (name) VALUES (?)", names[2]).Exec()
 		throwFail(t, err)
 		if err == nil {
 			id, err = res.LastInsertId()
@@ -2052,22 +2052,22 @@ func TestTransaction(t *testing.T) {
 		}
 	}
 
-	err = o.Rollback()
+	err = to.Rollback()
 	throwFail(t, err)
 
 	num, err = o.QueryTable("tag").Filter("name__in", names).Count()
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 0))
 
-	err = o.Begin()
+	to, err = o.Begin()
 	throwFail(t, err)
 
 	tag.Name = "commit"
-	id, err = o.Insert(&tag)
+	id, err = to.Insert(&tag)
 	throwFail(t, err)
 	throwFail(t, AssertIs(id > 0, true))
 
-	o.Commit()
+	to.Commit()
 	throwFail(t, err)
 
 	num, err = o.QueryTable("tag").Filter("name", "commit").Delete()
@@ -2086,33 +2086,33 @@ func TestTransactionIsolationLevel(t *testing.T) {
 	o2 := NewOrm()
 
 	// start two transaction with isolation level repeatable read
-	err := o1.BeginTx(context.Background(), &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
+	to1, err := o1.BeginWithCtxAndOpts(context.Background(), &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
 	throwFail(t, err)
-	err = o2.BeginTx(context.Background(), &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
+	to2, err := o2.BeginWithCtxAndOpts(context.Background(), &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
 	throwFail(t, err)
 
 	// o1 insert tag
 	var tag Tag
 	tag.Name = "test-transaction"
-	id, err := o1.Insert(&tag)
+	id, err := to1.Insert(&tag)
 	throwFail(t, err)
 	throwFail(t, AssertIs(id > 0, true))
 
 	// o2 query tag table, no result
-	num, err := o2.QueryTable("tag").Filter("name", "test-transaction").Count()
+	num, err := to2.QueryTable("tag").Filter("name", "test-transaction").Count()
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 0))
 
 	// o1 commit
-	o1.Commit()
+	to1.Commit()
 
 	// o2 query tag table, still no result
-	num, err = o2.QueryTable("tag").Filter("name", "test-transaction").Count()
+	num, err = to2.QueryTable("tag").Filter("name", "test-transaction").Count()
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 0))
 
 	// o2 commit and query tag table, get the result
-	o2.Commit()
+	to2.Commit()
 	num, err = o2.QueryTable("tag").Filter("name", "test-transaction").Count()
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 1))
@@ -2125,14 +2125,14 @@ func TestTransactionIsolationLevel(t *testing.T) {
 func TestBeginTxWithContextCanceled(t *testing.T) {
 	o := NewOrm()
 	ctx, cancel := context.WithCancel(context.Background())
-	o.BeginTx(ctx, nil)
-	id, err := o.Insert(&Tag{Name: "test-context"})
+	to, _ := o.BeginWithCtx(ctx)
+	id, err := to.Insert(&Tag{Name: "test-context"})
 	throwFail(t, err)
 	throwFail(t, AssertIs(id > 0, true))
 
 	// cancel the context before commit to make it error
 	cancel()
-	err = o.Commit()
+	err = to.Commit()
 	throwFail(t, AssertIs(err, context.Canceled))
 }
 
diff --git a/pkg/orm/types.go b/pkg/orm/types.go
index 2fd10774f0a8f70039ee6428b127bf64ec67506b..b7a38826842fb3fc7ffe23e2662c8ff3c95a2420 100644
--- a/pkg/orm/types.go
+++ b/pkg/orm/types.go
@@ -35,35 +35,43 @@ type Fielder interface {
 	RawValue() interface{}
 }
 
-// Ormer define the orm interface
-type Ormer interface {
-	// read data to model
-	// for example:
-	//	this will find User by Id field
-	// 	u = &User{Id: user.Id}
-	// 	err = Ormer.Read(u)
-	//	this will find User by UserName field
-	// 	u = &User{UserName: "astaxie", Password: "pass"}
-	//	err = Ormer.Read(u, "UserName")
-	Read(md interface{}, cols ...string) error
-	// Like Read(), but with "FOR UPDATE" clause, useful in transaction.
-	// Some databases are not support this feature.
-	ReadForUpdate(md interface{}, cols ...string) error
-	// Try to read a row from the database, or insert one if it doesn't exist
-	ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, int64, error)
+type TxBeginner interface {
+	//self control transaction
+	Begin() (TxOrmer, error)
+	BeginWithCtx(ctx context.Context) (TxOrmer, error)
+	BeginWithOpts(opts *sql.TxOptions) (TxOrmer, error)
+	BeginWithCtxAndOpts(ctx context.Context, opts *sql.TxOptions) (TxOrmer, error)
+
+	//closure control transaction
+	DoTx(task func(txOrm TxOrmer) error) error
+	DoTxWithCtx(ctx context.Context, task func(txOrm TxOrmer) error) error
+	DoTxWithOpts(opts *sql.TxOptions, task func(txOrm TxOrmer) error) error
+	DoTxWithCtxAndOpts(ctx context.Context, opts *sql.TxOptions, task func(txOrm TxOrmer) error) error
+}
+
+type TxCommitter interface {
+	Commit() error
+	Rollback() error
+}
+
+//Data Manipulation Language
+type DML interface {
 	// insert model data to database
 	// for example:
 	//  user := new(User)
 	//  id, err = Ormer.Insert(user)
 	//  user must be a pointer and Insert will set user's pk field
-	Insert(interface{}) (int64, error)
+	Insert(md interface{}) (int64, error)
+	InsertWithCtx(ctx context.Context, md interface{}) (int64, error)
 	// mysql:InsertOrUpdate(model) or InsertOrUpdate(model,"colu=colu+value")
 	// if colu type is integer : can use(+-*/), string : convert(colu,"value")
 	// postgres: InsertOrUpdate(model,"conflictColumnName") or InsertOrUpdate(model,"conflictColumnName","colu=colu+value")
 	// if colu type is integer : can use(+-*/), string : colu || "value"
 	InsertOrUpdate(md interface{}, colConflitAndArgs ...string) (int64, error)
+	InsertOrUpdateWithCtx(ctx context.Context, md interface{}, colConflitAndArgs ...string) (int64, error)
 	// insert some models to database
 	InsertMulti(bulk int, mds interface{}) (int64, error)
+	InsertMultiWithCtx(ctx context.Context, bulk int, mds interface{}) (int64, error)
 	// update model to database.
 	// cols set the columns those want to update.
 	// find model by Id(pk) field and update columns specified by fields, if cols is null then update all columns
@@ -74,63 +82,93 @@ type Ormer interface {
 	//	user.Extra.Data = "orm"
 	//	num, err = Ormer.Update(&user, "Langs", "Extra")
 	Update(md interface{}, cols ...string) (int64, error)
+	UpdateWithCtx(ctx context.Context, md interface{}, cols ...string) (int64, error)
 	// delete model in database
 	Delete(md interface{}, cols ...string) (int64, error)
+	DeleteWithCtx(ctx context.Context, md interface{}, cols ...string) (int64, error)
+
+	// return a raw query seter for raw sql string.
+	// for example:
+	//	 ormer.Raw("UPDATE `user` SET `user_name` = ? WHERE `user_name` = ?", "slene", "testing").Exec()
+	//	// update user testing's name to slene
+	Raw(query string, args ...interface{}) RawSeter
+	RawWithCtx(ctx context.Context, query string, args ...interface{}) RawSeter
+}
+
+// Data Query Language
+type DQL interface {
+	// read data to model
+	// for example:
+	//	this will find User by Id field
+	// 	u = &User{Id: user.Id}
+	// 	err = Ormer.Read(u)
+	//	this will find User by UserName field
+	// 	u = &User{UserName: "astaxie", Password: "pass"}
+	//	err = Ormer.Read(u, "UserName")
+	Read(md interface{}, cols ...string) error
+	ReadWithCtx(ctx context.Context, md interface{}, cols ...string) error
+
+	// Like Read(), but with "FOR UPDATE" clause, useful in transaction.
+	// Some databases are not support this feature.
+	ReadForUpdate( md interface{}, cols ...string) error
+	ReadForUpdateWithCtx(ctx context.Context, md interface{}, cols ...string) error
+
+	// Try to read a row from the database, or insert one if it doesn't exist
+	ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, int64, error)
+	ReadOrCreateWithCtx(ctx context.Context, md interface{}, col1 string, cols ...string) (bool, int64, error)
+
 	// load related models to md model.
 	// args are limit, offset int and order string.
 	//
 	// example:
 	// 	Ormer.LoadRelated(post,"Tags")
 	// 	for _,tag := range post.Tags{...}
-	//args[0] bool true useDefaultRelsDepth ; false  depth 0
-	//args[0] int  loadRelationDepth
-	//args[1] int limit default limit 1000
-	//args[2] int offset default offset 0
-	//args[3] string order  for example : "-Id"
+	// args[0] bool true useDefaultRelsDepth ; false  depth 0
+	// args[0] int  loadRelationDepth
+	// args[1] int limit default limit 1000
+	// args[2] int offset default offset 0
+	// args[3] string order  for example : "-Id"
 	// make sure the relation is defined in model struct tags.
-	LoadRelated(md interface{}, name string, args ...interface{}) (int64, error)
+	LoadRelated( md interface{}, name string, args ...interface{}) (int64, error)
+	LoadRelatedWithCtx(ctx context.Context, md interface{}, name string, args ...interface{}) (int64, error)
+
 	// create a models to models queryer
 	// for example:
 	// 	post := Post{Id: 4}
 	// 	m2m := Ormer.QueryM2M(&post, "Tags")
-	QueryM2M(md interface{}, name string) QueryM2Mer
+	QueryM2M( md interface{}, name string) QueryM2Mer
+	QueryM2MWithCtx(ctx context.Context, md interface{}, name string) QueryM2Mer
+
 	// return a QuerySeter for table operations.
 	// table name can be string or struct.
 	// e.g. QueryTable("user"), QueryTable(&user{}) or QueryTable((*User)(nil)),
 	QueryTable(ptrStructOrTableName interface{}) QuerySeter
+	QueryTableWithCtx(ctx context.Context, ptrStructOrTableName interface{}) QuerySeter
+
 	// switch to another registered database driver by given name.
-	Using(name string) error
-	// begin transaction
-	// for example:
-	// 	o := NewOrm()
-	// 	err := o.Begin()
-	// 	...
-	// 	err = o.Rollback()
-	Begin() error
-	// begin transaction with provided context and option
-	// the provided context is used until the transaction is committed or rolled back.
-	// if the context is canceled, the transaction will be rolled back.
-	// the provided TxOptions is optional and may be nil if defaults should be used.
-	// if a non-default isolation level is used that the driver doesn't support, an error will be returned.
-	// for example:
-	//  o := NewOrm()
-	// 	err := o.BeginTx(context.Background(), &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
-	//  ...
-	//  err = o.Rollback()
-	BeginTx(ctx context.Context, opts *sql.TxOptions) error
-	// commit transaction
-	Commit() error
-	// rollback transaction
-	Rollback() error
-	// return a raw query seter for raw sql string.
-	// for example:
-	//	 ormer.Raw("UPDATE `user` SET `user_name` = ? WHERE `user_name` = ?", "slene", "testing").Exec()
-	//	// update user testing's name to slene
-	Raw(query string, args ...interface{}) RawSeter
-	Driver() Driver
+	// Using(name string) error
+
 	DBStats() *sql.DBStats
 }
 
+type DriverGetter interface {
+	Driver() Driver
+}
+
+type Ormer interface {
+	DQL
+	DML
+	DriverGetter
+	TxBeginner
+}
+
+type TxOrmer interface {
+	DQL
+	DML
+	DriverGetter
+	TxCommitter
+}
+
 // Inserter insert prepared statement
 type Inserter interface {
 	Insert(interface{}) (int64, error)
@@ -229,7 +267,7 @@ type QuerySeter interface {
 	//	}) // user slene's  name will change to slene2
 	Update(values Params) (int64, error)
 	// delete from table
-	//for example:
+	// for example:
 	//	num ,err = qs.Filter("user_name__in", "testing1", "testing2").Delete()
 	// 	//delete two user  who's name is testing1 or testing2
 	Delete() (int64, error)
@@ -314,8 +352,8 @@ type QueryM2Mer interface {
 	// remove models following the origin model relationship
 	// only delete rows from m2m table
 	// for example:
-	//tag3 := &Tag{Id:5,Name: "TestTag3"}
-	//num, err = m2m.Remove(tag3)
+	// tag3 := &Tag{Id:5,Name: "TestTag3"}
+	// num, err = m2m.Remove(tag3)
 	Remove(...interface{}) (int64, error)
 	// check model is existed in relationship of origin model
 	Exist(interface{}) bool
@@ -337,10 +375,10 @@ type RawPreparer interface {
 //  sql := fmt.Sprintf("SELECT %sid%s,%sname%s FROM %suser%s WHERE id = ?",Q,Q,Q,Q,Q,Q)
 //  rs := Ormer.Raw(sql, 1)
 type RawSeter interface {
-	//execute sql and get result
+	// execute sql and get result
 	Exec() (sql.Result, error)
-	//query data and map to container
-	//for example:
+	// query data and map to container
+	// for example:
 	//	var name string
 	//	var id int
 	//	rs.QueryRow(&id,&name) // id==2 name=="slene"
@@ -396,11 +434,11 @@ type RawSeter interface {
 type stmtQuerier interface {
 	Close() error
 	Exec(args ...interface{}) (sql.Result, error)
-	//ExecContext(ctx context.Context, args ...interface{}) (sql.Result, error)
+	// ExecContext(ctx context.Context, args ...interface{}) (sql.Result, error)
 	Query(args ...interface{}) (*sql.Rows, error)
-	//QueryContext(args ...interface{}) (*sql.Rows, error)
+	// QueryContext(args ...interface{}) (*sql.Rows, error)
 	QueryRow(args ...interface{}) *sql.Row
-	//QueryRowContext(ctx context.Context, args ...interface{}) *sql.Row
+	// QueryRowContext(ctx context.Context, args ...interface{}) *sql.Row
 }
 
 // db querier