diff --git a/modules/db_comp.go b/modules/db_comp.go
index 3fdbedf59..f340d0e70 100644
--- a/modules/db_comp.go
+++ b/modules/db_comp.go
@@ -23,6 +23,8 @@ type MComp_DBComp struct {
 	DB mgo.ISys
 }
 
+const ()
+
 //组件初始化接口
 func (this *MComp_DBComp) Init(service core.IService, module core.IModule, comp core.IModuleComp, options core.IModuleOptions) (err error) {
 	this.ModuleCompBase.Init(service, module, comp, options)
diff --git a/modules/mail/api_delmail.go b/modules/mail/api_delmail.go
index 98a47a96e..eafc9113e 100644
--- a/modules/mail/api_delmail.go
+++ b/modules/mail/api_delmail.go
@@ -5,7 +5,6 @@ import (
 	"go_dreamfactory/comm"
 	"go_dreamfactory/lego/sys/log"
 	"go_dreamfactory/pb"
-	"go_dreamfactory/sys/db"
 )
 
 // 删除邮件
@@ -20,12 +19,12 @@ func (this *Api_Comp) DelUserMailReq(ctx context.Context, session comm.IUserSess
 		code = pb.ErrorCode_NoLogin
 		return
 	}
-	bRet := db.Defsys.Mail_DelUserMail(req.ObjID)
+	bRet := this.M.DB().(*DB_Comp).Mail_DelUserMail(req.ObjID)
 	if !bRet {
 		code = pb.ErrorCode_DBError
 		return
 	}
-	if mailinfo, err = db.Defsys.Mail_QueryUserMail(session.GetUserId()); err != nil {
+	if mailinfo, err = this.M.DB().(*DB_Comp).Mail_QueryUserMail(session.GetUserId()); err != nil {
 		log.Errorf("QueryUserMailResp err:%v", err)
 		code = pb.ErrorCode_CacheReadError
 		return
diff --git a/modules/mail/api_getAttachment.go b/modules/mail/api_getAttachment.go
index 68d2ed57b..e9a73caf0 100644
--- a/modules/mail/api_getAttachment.go
+++ b/modules/mail/api_getAttachment.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"go_dreamfactory/comm"
 	"go_dreamfactory/pb"
-	"go_dreamfactory/sys/db"
 )
 
 // 领取附件
@@ -21,12 +20,12 @@ func (this *Api_Comp) GetUserMailAttachmentReq(ctx context.Context, session comm
 		code = pb.ErrorCode_NoLogin
 		return
 	}
-	_bGet := db.Defsys.Mail_GetMailAttachmentState(req.ObjID)
+	_bGet := this.M.DB().(*DB_Comp).Mail_GetMailAttachmentState(req.ObjID)
 	if !_bGet {
 		code = pb.ErrorCode_StateInvalid
 		return
 	}
-	_data, err := db.Defsys.Mail_GetMailAttachment(req.ObjID)
+	_data, err := this.M.DB().(*DB_Comp).Mail_GetMailAttachment(req.ObjID)
 	if err != nil {
 		if len(_data) > 0 {
 			// todo 领取附件
@@ -37,7 +36,7 @@ func (this *Api_Comp) GetUserMailAttachmentReq(ctx context.Context, session comm
 			bRet := this.pack.AddItemsToUserPack(mail.UserId, _items)
 			if bRet != nil {
 				// 修改状态
-				db.Defsys.Mail_UpdateMailAttachmentState(req.ObjID)
+				this.M.DB().(*DB_Comp).Mail_UpdateMailAttachmentState(req.ObjID)
 				mail.Reward = true
 				return
 			}
diff --git a/modules/mail/api_getmail.go b/modules/mail/api_getmail.go
index 673682c37..aedbf4e71 100644
--- a/modules/mail/api_getmail.go
+++ b/modules/mail/api_getmail.go
@@ -5,7 +5,6 @@ import (
 	"go_dreamfactory/comm"
 	"go_dreamfactory/lego/sys/log"
 	"go_dreamfactory/pb"
-	"go_dreamfactory/sys/db"
 )
 
 // 查看所有邮件信息
@@ -20,7 +19,7 @@ func (this *Api_Comp) QueryUserMailReq(ctx context.Context, session comm.IUserSe
 		code = pb.ErrorCode_NoLogin
 		return
 	}
-	if mailinfo, err = db.Defsys.Mail_QueryUserMail(session.GetUserId()); err != nil {
+	if mailinfo, err = this.M.DB().(*DB_Comp).Mail_QueryUserMail(session.GetUserId()); err != nil {
 		log.Errorf("QueryUserMailResp err:%v", err)
 		code = pb.ErrorCode_CacheReadError
 		return
diff --git a/modules/mail/api_readmail.go b/modules/mail/api_readmail.go
index d83db2499..6bf7a98fe 100644
--- a/modules/mail/api_readmail.go
+++ b/modules/mail/api_readmail.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"go_dreamfactory/comm"
 	"go_dreamfactory/pb"
-	"go_dreamfactory/sys/db"
 )
 
 // 查看某一封邮件
@@ -21,7 +20,7 @@ func (this *Api_Comp) ReadUserMailReq(ctx context.Context, session comm.IUserSes
 		return
 	}
 
-	mail, err = db.Defsys.Mail_ReadOneMail(req.ObjID)
+	mail, err = this.M.DB().(*DB_Comp).Mail_ReadOneMail(req.ObjID)
 	if err != nil {
 		code = pb.ErrorCode_ReqParameterError
 	}
diff --git a/sys/db/mail.go b/modules/mail/db_comp.go
similarity index 62%
rename from sys/db/mail.go
rename to modules/mail/db_comp.go
index 4b317af19..c7e2d267a 100644
--- a/sys/db/mail.go
+++ b/modules/mail/db_comp.go
@@ -1,7 +1,8 @@
-package db
+package mail
 
 import (
 	"context"
+	"go_dreamfactory/modules"
 	"go_dreamfactory/pb"
 
 	"go_dreamfactory/lego/core"
@@ -15,6 +16,9 @@ const (
 	DB_MailTable core.SqlTable = "mail"
 )
 
+type DB_Comp struct {
+	modules.MComp_DBComp
+}
 type IMail interface {
 	Mail_QueryUserMail(uId string) (mail []*pb.DB_MailData, err error)
 	Mail_InsertUserMail(mail *pb.DB_MailData) (err error)
@@ -25,9 +29,9 @@ type IMail interface {
 	Mail_DelUserMail(objId string) bool
 }
 
-func (this *DB) Mail_QueryUserMail(uId string) (mail []*pb.DB_MailData, err error) {
+func (this *DB_Comp) Mail_QueryUserMail(uId string) (mail []*pb.DB_MailData, err error) {
 
-	if _data, err := this.mgo.Find(DB_MailTable, bson.M{"userid": uId}); err == nil {
+	if _data, err := this.DB.Find(DB_MailTable, bson.M{"userid": uId}); err == nil {
 		for _data.Next(context.TODO()) {
 			temp := &pb.DB_MailData{}
 			if err = _data.Decode(temp); err == nil {
@@ -39,7 +43,7 @@ func (this *DB) Mail_QueryUserMail(uId string) (mail []*pb.DB_MailData, err erro
 }
 
 // 插入一封新的邮件
-func (this *DB) Mail_InsertUserMail(mail *pb.DB_MailData) (err error) {
+func (this *DB_Comp) Mail_InsertUserMail(mail *pb.DB_MailData) (err error) {
 
 	mail.ObjId = primitive.NewObjectID().Hex()
 	mail.Check = false
@@ -48,14 +52,14 @@ func (this *DB) Mail_InsertUserMail(mail *pb.DB_MailData) (err error) {
 	if len(mail.GetItems()) > 0 {
 		mail.Reward = true
 	}
-	_, err = this.mgo.InsertOne(DB_MailTable, mail)
+	_, err = this.DB.InsertOne(DB_MailTable, mail)
 
 	return err
 }
 
-func (this *DB) Mail_ReadOneMail(objId string) (mail *pb.DB_MailData, err error) {
+func (this *DB_Comp) Mail_ReadOneMail(objId string) (mail *pb.DB_MailData, err error) {
 
-	err = this.mgo.FindOneAndUpdate(
+	err = this.DB.FindOneAndUpdate(
 		DB_MailTable,
 		bson.M{"_id": objId},
 		bson.M{"$set": bson.M{
@@ -68,9 +72,9 @@ func (this *DB) Mail_ReadOneMail(objId string) (mail *pb.DB_MailData, err error)
 }
 
 // 查询附件信息
-func (this *DB) Mail_GetMailAttachment(objId string) (itmes []*pb.MailAttachment, err error) {
+func (this *DB_Comp) Mail_GetMailAttachment(objId string) (itmes []*pb.MailAttachment, err error) {
 
-	obj := this.mgo.FindOne(DB_MailTable, bson.M{"_id": objId})
+	obj := this.DB.FindOne(DB_MailTable, bson.M{"_id": objId})
 	var nd *pb.DB_MailData
 	err = obj.Decode(&nd)
 	itmes = nd.GetItems()
@@ -79,9 +83,9 @@ func (this *DB) Mail_GetMailAttachment(objId string) (itmes []*pb.MailAttachment
 }
 
 // 查看领取附件状态
-func (this *DB) Mail_GetMailAttachmentState(objId string) bool {
+func (this *DB_Comp) Mail_GetMailAttachmentState(objId string) bool {
 	var nd *pb.DB_MailData
-	err := this.mgo.FindOne(DB_MailTable, bson.M{"_id": objId}).Decode(nd)
+	err := this.DB.FindOne(DB_MailTable, bson.M{"_id": objId}).Decode(nd)
 	if err != nil {
 		return false
 	}
@@ -89,8 +93,8 @@ func (this *DB) Mail_GetMailAttachmentState(objId string) bool {
 }
 
 // 更新领取附件状态
-func (this *DB) Mail_UpdateMailAttachmentState(objId string) bool {
-	this.mgo.FindOneAndUpdate(
+func (this *DB_Comp) Mail_UpdateMailAttachmentState(objId string) bool {
+	this.DB.FindOneAndUpdate(
 		DB_MailTable,
 		bson.M{"_id": objId},
 		bson.M{"$set": bson.M{
@@ -103,13 +107,13 @@ func (this *DB) Mail_UpdateMailAttachmentState(objId string) bool {
 }
 
 // 删除一封邮件
-func (this *DB) Mail_DelUserMail(objId string) bool {
+func (this *DB_Comp) Mail_DelUserMail(objId string) bool {
 	var obj *pb.DB_MailData
-	err := this.mgo.FindOne(DB_MailTable, bson.M{"_id": objId}).Decode(obj)
+	err := this.DB.FindOne(DB_MailTable, bson.M{"_id": objId}).Decode(obj)
 	if err != nil {
 		return false
 	}
-	this.mgo.DeleteOne(DB_MailTable, bson.M{"_id": objId})
+	this.DB.DeleteOne(DB_MailTable, bson.M{"_id": objId})
 
 	return true
 }
diff --git a/modules/mail/mail_test.go b/modules/mail/mail_test.go
new file mode 100644
index 000000000..53ec56f93
--- /dev/null
+++ b/modules/mail/mail_test.go
@@ -0,0 +1,32 @@
+package mail
+
+import (
+	"testing"
+)
+
+func TestCreateEmail(t *testing.T) {
+	// err := db.Mail_InsertUserMail(&pb.DB_MailData{
+
+	// 	UserId:     "uid123",
+	// 	Title:      "系统邮件",
+	// 	Contex:     "恭喜获得专属礼包一份",
+	// 	CreateTime: uint64(time.Now().Unix()),
+	// 	DueTime:    uint64(time.Now().Unix()) + 30*24*3600,
+	// 	Check:      false,
+	// 	Reward:     false,
+	// })
+	// _data, err := db.Mail_QueryUserMail("uid123")
+
+	// for _, v := range _data {
+	// 	log.Printf("userid = %s", v.UserId)
+	// }
+	// require.Nil(t, err, nil)
+}
+
+func TestReadEmail(t *testing.T) {
+	// data, err := db.Mail_ReadOneMail("62a078c0726ea54890c34937")
+	// if err != nil {
+	// 	log.Printf("%v", data.Reward)
+	// }
+	// require.Nil(t, err, data)
+}
diff --git a/modules/mail/module.go b/modules/mail/module.go
index 8cc6f8fc7..d77e47e93 100644
--- a/modules/mail/module.go
+++ b/modules/mail/module.go
@@ -5,7 +5,6 @@ import (
 	"go_dreamfactory/modules"
 	"go_dreamfactory/pb"
 	"go_dreamfactory/sys/cache"
-	"go_dreamfactory/sys/db"
 	"time"
 
 	"go_dreamfactory/lego/core"
@@ -51,7 +50,7 @@ func (this *Mail) CreateNewMail(uId string) {
 		Check:      false,
 		Reward:     false,
 	}
-	err := db.Defsys.Mail_InsertUserMail(mail)
+	err := this.DB().(*DB_Comp).Mail_InsertUserMail(mail)
 	if err != nil {
 		log.Error("create mail failed")
 	}
diff --git a/modules/mail_test.go b/modules/mail_test.go
index 37f6b3c8a..4329db094 100644
--- a/modules/mail_test.go
+++ b/modules/mail_test.go
@@ -14,8 +14,9 @@ var (
 func TestCreatemoudles(t *testing.T) {
 	_mail := &pb.DB_MailData{
 
-		UserId:     "uid123",
-		Title:      "系统邮件",
+		UserId: "uid123",
+		Title:  "系统邮件",
+
 		Contex:     "恭喜获得专属礼包一份",
 		CreateTime: uint64(time.Now().Unix()),
 		DueTime:    uint64(time.Now().Unix()) + 30*24*3600,
diff --git a/sys/db/core.go b/sys/db/core.go
index 5937bc925..7eb3d159d 100644
--- a/sys/db/core.go
+++ b/sys/db/core.go
@@ -6,7 +6,6 @@ type (
 	ISys interface {
 		Mgo() mgo.ISys
 		IUser
-		IMail
 		IFriend
 	}
 )
diff --git a/sys/db/mail_test.go b/sys/db/mail_test.go
deleted file mode 100644
index 6be8ac769..000000000
--- a/sys/db/mail_test.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package db
-
-import (
-	"go_dreamfactory/pb"
-	"log"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestCreateEmail(t *testing.T) {
-	err := db.Mail_InsertUserMail(&pb.DB_MailData{
-
-		UserId:     "uid123",
-		Title:      "系统邮件",
-		Contex:     "恭喜获得专属礼包一份",
-		CreateTime: uint64(time.Now().Unix()),
-		DueTime:    uint64(time.Now().Unix()) + 30*24*3600,
-		Check:      false,
-		Reward:     false,
-	})
-	_data, err := db.Mail_QueryUserMail("uid123")
-
-	for _, v := range _data {
-		log.Printf("userid = %s", v.UserId)
-	}
-	require.Nil(t, err, nil)
-}
-
-func TestReadEmail(t *testing.T) {
-	data, err := db.Mail_ReadOneMail("62a078c0726ea54890c34937")
-	if err != nil {
-		log.Printf("%v", data.Reward)
-	}
-	require.Nil(t, err, data)
-}