The study is about a dental floss rod design. A dental floss rod includes a thread supporting frame, a grip, a cleaning member and a thread. The thread-supporting frame is composed of a frame located to extend up from the grip and the thread is fixed between the upper and the lower end of the frame. The grip has a thick size for holding, and the cleaning member extends down from the lower end of the grip and shaped very thin and its end is formed with a rugged surface for easily moving into tooth gaps for cleaning what remains therein. In addition to traditional dental floss teeth rod function, it can still add three cleaning functions, such as: scraping tongue and mouthwash, etc. It can provide multiple scaling functions, compared to traditional dental floss cleaning rod function also improved.