A kind of dental floss tamper assembly device of adjustable length,Include: one group connects lever and a dental floss stick,Group connects lever front end and connects with a tooth stick eye-splice part for dental floss stick group,Group, which connects, has at least two snap engagement portions among lever,Any one can with the snap engagement of tooth stick eye-splice rods tail end to fix dental floss stick,Its dens in dente stick eye-splice part and snap engagement portion apart from small what or wait the length of whats tooth stick eye-splice rods,Thereby composite structure enables dental floss bar device that user is allowed to replace dental floss stick of different shapes according to demands of individuals and adjust the length of dental floss stick,And force and operation can be more saved in use smoothly,Make the better effect for cleaning oral cavity.一種可調整長度之牙線棒組合裝置,包含:一組接握柄以及一牙線棒,組接握柄前端具有一牙棒插扣部供牙線棒組接,組接握柄中間具有至少二個卡扣接合部,任一者可與牙棒插扣棒件尾端之卡扣接合以固定牙線棒,其中牙棒插扣部與卡扣接合部之距離小於或等於牙棒插扣棒件的長度,藉此組合結構使得牙線棒裝置能讓使用者依個人需求更換不同形狀的牙線棒及調整牙線棒的長度,而在使用上更能節省施力及操作順手,使清潔口腔之效果更佳。