A kind of environmental protection dental floss bar device of replaceable dental floss,Comprising a dental floss seat,One holding rod,And a separate type dental floss component,Dental floss seat has two support arms,Two support arms are respectively provided with an engaging slot,Holding rod is connected with dental floss seat； Separate type dental floss component has two fasteners,And be one dental floss of connection between two fasteners,Two fastener systems it is corresponding with engaging slot engaging and extend dental floss between two support arms,Two fastener systems separate from engaging slot and separate dental floss from two support arms,By replacement separate type dental floss component and reuse dental floss seat and holding rod,The waste of resource can be reduced and reach environmentally friendly demand,And production cost is reduced,Consumer can also less expensive price go purchase dental floss stick,Dental floss stick is allowed to utilize upper economic value with more industry.一種可更換牙線之環保牙線棒裝置，包含一牙線座、一握持桿、以及一分離式牙線構件，牙線座具有二個支臂，二個支臂各設有一卡合槽，握持桿與牙線座相連接；分離式牙線構件具二個卡合件，且二個卡合件之間係連接一牙線，二個卡合件係與卡合槽對應卡合而使牙線在二個支臂之間延伸，二個卡合件係自卡合槽分離而使牙線自二個支臂分離，藉由更換的分離式牙線構件並且重複利用牙線座及握持桿，可以減少資源的浪費而達到環保的需求，並且降低生產成本，消費者也可以更低廉的價格去購買牙線棒，讓牙線棒更具有產業利用上的經濟價值。
