diff --git a/pkg/common/db/controller/msg.go b/pkg/common/db/controller/msg.go
index ae427442a..6198f3a24 100644
--- a/pkg/common/db/controller/msg.go
+++ b/pkg/common/db/controller/msg.go
@@ -2,7 +2,9 @@ package controller
 
 import (
 	pbMsg "Open_IM/pkg/proto/msg"
+	"Open_IM/pkg/proto/sdkws"
 	"context"
+	"encoding/json"
 )
 
 type MsgInterface interface {
@@ -14,10 +16,61 @@ type MsgInterface interface {
 	DelMsgLogic(ctx context.Context, userID string, seqList []uint32) error
 	DelMsgBySeqListInOneDoc(ctx context.Context, docID string, seqList []uint32) (unExistSeqList []uint32, err error)
 	ReplaceMsgToBlankByIndex(docID string, index int) (replaceMaxSeq uint32, err error)
+	ReplaceMsgByIndex(ctx context.Context, suffixUserID string, msg *sdkws.MsgData, seqIndex int) error
+	// 获取群ID或者UserID最新一条在mongo里面的消息
+	GetNewestMsg(ID string) (msg *sdkws.MsgData, err error)
+	// 获取群ID或者UserID最老一条在mongo里面的消息
+	GetOldestMsg(ID string) (msg *sdkws.MsgData, err error)
+
+	GetMsgBySeqListMongo2(uid string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, err error)
+	GetSuperGroupMsgBySeqListMongo(groupID string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, err error)
+	GetMsgAndIndexBySeqListInOneMongo2(suffixUserID string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, indexList []int, unExistSeqList []uint32, err error)
+	SaveUserChatMongo2(uid string, sendTime int64, m *pbMsg.MsgDataToDB) error
+
+	CleanUpUserMsgFromMongo(userID string, operationID string) error
+}
+
+func NewMsgController() MsgDatabaseInterface {
+	return MsgController
+}
+
+type MsgController struct {
 }
 
 type MsgDatabaseInterface interface {
 	BatchInsertChat2DB(ctx context.Context, userID string, msgList []*pbMsg.MsgDataToMQ, currentMaxSeq uint64) error
 	BatchInsertChat2Cache(ctx context.Context, insertID string, msgList []*pbMsg.MsgDataToMQ) (error, uint64)
+
 	DelMsgBySeqList(ctx context.Context, userID string, seqList []uint32) (totalUnExistSeqList []uint32, err error)
+	// logic delete
+	DelMsgLogic(ctx context.Context, userID string, seqList []uint32) error
+	DelMsgBySeqListInOneDoc(ctx context.Context, docID string, seqList []uint32) (unExistSeqList []uint32, err error)
+	ReplaceMsgToBlankByIndex(docID string, index int) (replaceMaxSeq uint32, err error)
+	ReplaceMsgByIndex(ctx context.Context, suffixUserID string, msg *sdkws.MsgData, seqIndex int) error
+	// 获取群ID或者UserID最新一条在mongo里面的消息
+	GetNewestMsg(ID string) (msg *sdkws.MsgData, err error)
+	// 获取群ID或者UserID最老一条在mongo里面的消息
+	GetOldestMsg(ID string) (msg *sdkws.MsgData, err error)
+
+	GetMsgBySeqListMongo2(uid string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, err error)
+	GetSuperGroupMsgBySeqListMongo(groupID string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, err error)
+	GetMsgAndIndexBySeqListInOneMongo2(suffixUserID string, seqList []uint32, operationID string) (seqMsg []*sdkws.MsgData, indexList []int, unExistSeqList []uint32, err error)
+	SaveUserChatMongo2(uid string, sendTime int64, m *pbMsg.MsgDataToDB) error
+	// 删除用户所有消息/redis/mongo然后重置seq
+	CleanUpUserMsgFromMongo(userID string, operationID string) error
+}
+
+func NewMsgDatabase() MsgDatabaseInterface {
+	return MsgDatabase
+}
+
+type MsgDatabase struct {
+}
+
+func (m *MsgDatabase) BatchInsertChat2DB(ctx context.Context, userID string, msgList []*pbMsg.MsgDataToMQ, currentMaxSeq uint64) error {
+
+}
+
+func (m *MsgDatabase) CleanUpUserMsgFromMongo(userID string, operationID string) error {
+
 }
diff --git a/pkg/common/db/table/unrelation/msg.go b/pkg/common/db/table/unrelation/msg.go
index 108e78898..b212ed9a7 100644
--- a/pkg/common/db/table/unrelation/msg.go
+++ b/pkg/common/db/table/unrelation/msg.go
@@ -1,6 +1,10 @@
 package unrelation
 
-import "strconv"
+import (
+	"Open_IM/pkg/common/constant"
+	"Open_IM/pkg/proto/sdkws"
+	"strconv"
+)
 
 const (
 	singleGocMsgNum = 5000
@@ -77,3 +81,23 @@ func (UserMsgDocModel) getMsgIndex(seq uint32) int {
 func (UserMsgDocModel) indexGen(uid string, seqSuffix uint32) string {
 	return uid + ":" + strconv.FormatInt(int64(seqSuffix), 10)
 }
+
+func (UserMsgDocModel) genExceptionMessageBySeqList(seqList []uint32) (exceptionMsg []*sdkws.MsgData) {
+	for _, v := range seqList {
+		msg := new(sdkws.MsgData)
+		msg.Seq = v
+		exceptionMsg = append(exceptionMsg, msg)
+	}
+	return exceptionMsg
+}
+
+func (UserMsgDocModel) genExceptionSuperGroupMessageBySeqList(seqList []uint32, groupID string) (exceptionMsg []*sdkws.MsgData) {
+	for _, v := range seqList {
+		msg := new(sdkws.MsgData)
+		msg.Seq = v
+		msg.GroupID = groupID
+		msg.SessionType = constant.SuperGroupChatType
+		exceptionMsg = append(exceptionMsg, msg)
+	}
+	return exceptionMsg
+}
diff --git a/pkg/common/db/unrelation/msg.go b/pkg/common/db/unrelation/msg.go
index 96fd280d9..50e85fafd 100644
--- a/pkg/common/db/unrelation/msg.go
+++ b/pkg/common/db/unrelation/msg.go
@@ -470,26 +470,6 @@ func (d *db.DataBases) GetMsgAndIndexBySeqListInOneMongo2(suffixUserID string, s
 	return seqMsg, indexList, unexistSeqList, nil
 }
 
-func genExceptionMessageBySeqList(seqList []uint32) (exceptionMsg []*sdkws.MsgData) {
-	for _, v := range seqList {
-		msg := new(sdkws.MsgData)
-		msg.Seq = v
-		exceptionMsg = append(exceptionMsg, msg)
-	}
-	return exceptionMsg
-}
-
-func genExceptionSuperGroupMessageBySeqList(seqList []uint32, groupID string) (exceptionMsg []*sdkws.MsgData) {
-	for _, v := range seqList {
-		msg := new(sdkws.MsgData)
-		msg.Seq = v
-		msg.GroupID = groupID
-		msg.SessionType = constant.SuperGroupChatType
-		exceptionMsg = append(exceptionMsg, msg)
-	}
-	return exceptionMsg
-}
-
 func (d *db.DataBases) SaveUserChatMongo2(uid string, sendTime int64, m *pbMsg.MsgDataToDB) error {
 	ctx, _ := context.WithTimeout(context.Background(), time.Duration(config.Config.Mongo.DBTimeout)*time.Second)
 	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cChat)
@@ -560,22 +540,6 @@ func (d *db.DataBases) SaveUserChat(uid string, sendTime int64, m *pbMsg.MsgData
 	return nil
 }
 
-func (d *db.DataBases) DelUserChatMongo2(uid string) error {
-	ctx, _ := context.WithTimeout(context.Background(), time.Duration(config.Config.Mongo.DBTimeout)*time.Second)
-	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cChat)
-	filter := bson.M{"uid": uid}
-
-	delTime := time.Now().Unix() - int64(config.Config.Mongo.DBRetainChatRecords)*24*3600
-	if _, err := c.UpdateOne(ctx, filter, bson.M{"$pull": bson.M{"msg": bson.M{"sendtime": bson.M{"$lte": delTime}}}}); err != nil {
-		return utils.Wrap(err, "")
-	}
-	return nil
-}
-
-func (d *db.DataBases) MgoSkipUID(count int) (string, error) {
-	return "", nil
-}
-
 func (d *db.DataBases) CleanUpUserMsgFromMongo(userID string, operationID string) error {
 	ctx := context.Background()
 	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cChat)