A kind of dental floss bar device having alternate form flossing head and dental floss box,Include: one group connect lever,One winding box and a dental floss stick,Group connects lever front end and connects with a tooth stick eye-splice part for dental floss stick group,There is a wire box group connecting part to connect for winding box group at Hou end,A cabling conduit is extended between wire box group connecting part and tooth stick eye-splice part,It sets up a stringing conduit of what dental floss stick so that one of winding box receiving dental floss extends through cabling conduit and cleans oral cavity with what,Thereby structure enables dental floss bar device to facilitate substitute dental floss and re-cover use,It is very environmentally friendly.一種具替換式牙線頭及牙線盒之牙線棒裝置，包含：一組接握柄、一收線盒以及一牙線棒，組接握柄前端具有一牙棒插扣部供牙線棒組接，後端具有一線盒組接部供收線盒組接，在線盒組接部與牙棒插扣部之間延伸有一走線槽道，以供收線盒收容之一牙線經走線槽道而延伸架設於牙線棒的一架線槽道而用於清潔口腔，藉此結構使得牙線棒裝置能夠方便替補牙線而重覆使用，甚為環保。
