diff --git a/pkg/common/db/unrelation/msg.go b/pkg/common/db/unrelation/msg.go
index 6f759dfb2..b8581e3b0 100644
--- a/pkg/common/db/unrelation/msg.go
+++ b/pkg/common/db/unrelation/msg.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/constant"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
 	"strings"
 
 	table "github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/table/unrelation"
@@ -181,6 +182,7 @@ func (m *MsgMongoDriver) DeleteDocs(ctx context.Context, docIDs []string) error
 }
 
 func (m *MsgMongoDriver) GetMsgBySeqIndexIn1Doc(ctx context.Context, userID string, docID string, seqs []int64) (msgs []*table.MsgInfoModel, err error) {
+	log.ZDebug(ctx, "GetMsgBySeqIndexIn1Doc in", "docID", docID, "userID", userID, "seqs", seqs)
 	indexs := make([]int64, 0, len(seqs))
 	for _, seq := range seqs {
 		indexs = append(indexs, m.model.GetMsgIndex(seq))
@@ -236,10 +238,14 @@ func (m *MsgMongoDriver) GetMsgBySeqIndexIn1Doc(ctx context.Context, userID stri
 	if err := cur.All(ctx, &msgDocModel); err != nil {
 		return nil, errs.Wrap(err)
 	}
+	log.ZDebug(ctx, "GetMsgBySeqIndexIn1Doc mongo res", "docID", docID, "userID", userID, "seqs", seqs, "msgDocModel", len(msgDocModel))
 	if len(msgDocModel) == 0 {
 		return nil, errs.Wrap(mongo.ErrNoDocuments)
 	}
 	for i, model := range msgDocModel[0].Msg {
+		if i < 10 {
+			log.ZDebug(ctx, "GetMsgBySeqIndexIn1Doc for", "index", i, "msg", model.Msg, "del", model.DelList, "revoke", model.Revoke)
+		}
 		if model.Msg != nil && model.Revoke != nil {
 			var conversationID string
 			if index := strings.LastIndex(docID, ":"); index > 0 {