diff --git a/modules/pagoda/model_rank.go b/modules/pagoda/model_rank.go
index 83a82eee8..84f30470d 100644
--- a/modules/pagoda/model_rank.go
+++ b/modules/pagoda/model_rank.go
@@ -136,6 +136,7 @@ func (this *ModelRank) GetFloorRankList(floor int32) (result []*pb.DBPagodaRecor
 func (this *ModelRank) GetFloorLastRankData(floor int32) (curData *pb.DBPagodaRecord, len int, err error) {
 	key := fmt.Sprintf("%s-%d-rank", floorRankKey, floor)
 	len, err = this.Redis.Llen(key)
+	curData = &pb.DBPagodaRecord{}
 	if this.Redis.Lindex(key, -1, curData); err != nil {
 		this.modulePagoda.Errorf("err:%v", err)
 		return