diff --git a/domain/cache/group_c/enter_room.go b/domain/cache/group_c/enter_room.go
index a164a0439f39fd75953919686da34296ee521d74..def6372ef2c1ded5780da37d7130fe0a2e713660 100644
--- a/domain/cache/group_c/enter_room.go
+++ b/domain/cache/group_c/enter_room.go
@@ -59,3 +59,13 @@ func GetUserRecentRooms(model *domain.Model, userId uint64) (imGroupIds []string
 	}
 	return
 }
+
+// 清理房间访客
+// 15天前访问的
+func RemoveRoomVisitors(model *domain.Model, imGroupId string) {
+	groupKey := group_k.GetUserEnterRoomGroupKey(imGroupId)
+	err := model.Redis.ZRemRangeByScore(model, groupKey, "-inf", fmt.Sprintf("%d", time.Now().AddDate(0, 0, -15).Unix())).Err()
+	if err != nil {
+		model.Log.Errorf("RemoveRoomVisitors fail:%v", err)
+	}
+}