diff --git a/business/model/dao/dao.go b/business/model/dao/dao.go
index 610153e7b..994f42748 100644
--- a/business/model/dao/dao.go
+++ b/business/model/dao/dao.go
@@ -15,7 +15,7 @@ const (
 
 type DaoDB struct {
 	transactionLevel int
-	db               orm.Ormer
+	Db               orm.Ormer
 }
 
 // func GetRows(db *gorm.DB, inPtr interface{}, sql string, values ...interface{}) (err error) {
@@ -56,33 +56,35 @@ type DaoDB struct {
 // beego orm的对于传代表字段的字串，数据库字段名（完全匹配，区分大小写），结构体字段名（不区分大小写）都可以
 
 func GetDB() *DaoDB {
-	return &DaoDB{db: orm.NewOrm()}
+	return &DaoDB{Db: orm.NewOrm()}
 }
 
 func WrapDB(ormDb orm.Ormer) *DaoDB {
-	return &DaoDB{db: ormDb}
+	return &DaoDB{Db: ormDb}
 }
 
 func Begin(db *DaoDB) (err error) {
 	if db.transactionLevel == 0 {
-		err = db.db.Begin()
+		err = db.Db.Begin()
 	}
 	db.transactionLevel++
 	return err
 }
 
 func Commit(db *DaoDB) (err error) {
-	if db.transactionLevel <= 1 {
-		err = db.db.Commit()
+	if db.transactionLevel == 1 {
+		err = db.Db.Commit()
 		db.transactionLevel = 0
-	} else {
+	} else if db.transactionLevel > 1 {
 		db.transactionLevel--
 	}
 	return err
 }
 
 func Rollback(db *DaoDB) (err error) {
-	err = db.db.Rollback()
+	if db.transactionLevel > 0 {
+		err = db.Db.Rollback()
+	}
 	db.transactionLevel = 0
 	return err
 }
@@ -92,7 +94,7 @@ func GetRow(db *DaoDB, inPtr interface{}, sql string, values ...interface{}) (er
 		db = GetDB()
 	}
 	if !useGetRowsWhenGetRow { // beego QueryRow有bug，嵌入的struct不能正常绑定
-		err = db.db.Raw(sql, values).QueryRow(inPtr)
+		err = db.Db.Raw(sql, values).QueryRow(inPtr)
 	} else {
 		typeInfo := reflect.TypeOf(inPtr)
 		if typeInfo.Kind() != reflect.Ptr {
@@ -115,7 +117,7 @@ func GetRows(db *DaoDB, inPtr interface{}, sql string, values ...interface{}) (e
 	if db == nil {
 		db = GetDB()
 	}
-	_, err = db.db.Raw(sql, values).QueryRows(inPtr)
+	_, err = db.Db.Raw(sql, values).QueryRows(inPtr)
 	return err
 }
 
@@ -124,7 +126,7 @@ func GetEntity(db *DaoDB, item interface{}, cols ...string) (err error) {
 		db = GetDB()
 	}
 	err = utils.CallFuncLogErrorIgnore(func() error {
-		return db.db.Read(item, cols...)
+		return db.Db.Read(item, cols...)
 	}, reflect.TypeOf(item).Name(), orm.ErrNoRows)
 	return err
 }
@@ -133,7 +135,7 @@ func UpdateEntity(db *DaoDB, item interface{}, cols ...string) (num int64, err e
 	if db == nil {
 		db = GetDB()
 	}
-	num, err = db.db.Update(item, cols...)
+	num, err = db.Db.Update(item, cols...)
 	if err != nil && !IsDuplicateError(err) {
 		globals.SugarLogger.Errorf("UpdateEntity %s failed with error:%v", reflect.TypeOf(item).Name(), err)
 	}
@@ -144,7 +146,7 @@ func CreateEntity(db *DaoDB, item interface{}) (err error) {
 	if db == nil {
 		db = GetDB()
 	}
-	if _, err = db.db.Insert(item); err != nil && !IsDuplicateError(err) {
+	if _, err = db.Db.Insert(item); err != nil && !IsDuplicateError(err) {
 		globals.SugarLogger.Errorf("CreateEntity %s failed with error:%v", reflect.TypeOf(item).Name(), err)
 	}
 	return err
@@ -155,7 +157,7 @@ func CreateMultiEntities(db *DaoDB, item interface{}) (err error) {
 	if db == nil {
 		db = GetDB()
 	}
-	if _, err = db.db.InsertMulti(20, item); err != nil && !IsDuplicateError(err) {
+	if _, err = db.Db.InsertMulti(20, item); err != nil && !IsDuplicateError(err) {
 		globals.SugarLogger.Errorf("CreateEntity %s failed with error:%v", reflect.TypeOf(item).Name(), err)
 	}
 	return err
@@ -165,7 +167,7 @@ func CreateOrUpdate(db *DaoDB, item interface{}, colConflitAndArgs ...string) (e
 	if db == nil {
 		db = GetDB()
 	}
-	_, err = db.db.InsertOrUpdate(item, colConflitAndArgs...)
+	_, err = db.Db.InsertOrUpdate(item, colConflitAndArgs...)
 	return err
 }
 
@@ -174,7 +176,7 @@ func DeleteEntity(db *DaoDB, item interface{}, cols ...string) (num int64, err e
 		db = GetDB()
 	}
 	err = utils.CallFuncLogError(func() error {
-		num, err = db.db.Delete(item, cols...)
+		num, err = db.Db.Delete(item, cols...)
 		return err
 	}, reflect.TypeOf(item).Name())
 	return num, err
@@ -185,7 +187,7 @@ func ExecuteSQL(db *DaoDB, sql string, params ...interface{}) (num int64, err er
 		db = GetDB()
 	}
 	err = utils.CallFuncLogError(func() error {
-		result, err2 := db.db.Raw(sql, params...).Exec()
+		result, err2 := db.Db.Raw(sql, params...).Exec()
 		if err2 == nil {
 			num, _ = result.RowsAffected()
 		}
diff --git a/business/model/dao/dao_bz.go b/business/model/dao/dao_bz.go
index 8299049ec..18fb2d78d 100644
--- a/business/model/dao/dao_bz.go
+++ b/business/model/dao/dao_bz.go
@@ -22,7 +22,7 @@ func GetEntitiesByKV(db *DaoDB, item interface{}, conditions map[string]interfac
 		if typeInfo.Kind() == reflect.Ptr {
 			typeInfo = typeInfo.Elem()
 		}
-		qs := db.db.QueryTable(reflect.New(typeInfo).Interface())
+		qs := db.Db.QueryTable(reflect.New(typeInfo).Interface())
 		for k, v := range conditions {
 			qs = qs.Filter(k, v)
 		}
@@ -42,7 +42,7 @@ func UpdateEntityByKV(db *DaoDB, item interface{}, kvs map[string]interface{}, c
 	if db == nil {
 		db = GetDB()
 	}
-	qs := db.db.QueryTable(item)
+	qs := db.Db.QueryTable(item)
 	if conditions == nil {
 		qs = qs.Filter(model.FieldID, refutil.GetObjFieldByName(item, model.FieldID))
 	} else {
diff --git a/business/model/dao/place.go b/business/model/dao/place.go
index a3320487e..aed95f0ed 100644
--- a/business/model/dao/place.go
+++ b/business/model/dao/place.go
@@ -34,7 +34,7 @@ func GetPlaceByName(db *DaoDB, name string, level int, parentCode int) (place *m
 
 	}
 	if err = GetEntity(db, place, cols...); err == orm.ErrNoRows {
-		err = db.db.Raw("SELECT * FROM place WHERE parent_code = ? AND level = ? AND name LIKE ?", parentCode, level, "%"+name+"%").QueryRow(place)
+		err = db.Db.Raw("SELECT * FROM place WHERE parent_code = ? AND level = ? AND name LIKE ?", parentCode, level, "%"+name+"%").QueryRow(place)
 	}
 	return place, err
 }
@@ -46,6 +46,6 @@ func GetPlaceByJdCode(db *DaoDB, jdCode int) (place *model.Place, err error) {
 	place = &model.Place{
 		JdCode: jdCode,
 	}
-	err = db.db.Read(place, "JdCode")
+	err = db.Db.Read(place, "JdCode")
 	return place, err
 }