A kind of diversion pipe of tool length variation function comprising have one for the tube body of liquid communication, both ends are respectively formed with an arrival end and an outlet end, and it is in the crimping segment for state of curling that the part between this tube body what arrival end and outlet end, which has one,. This crimping segment has elasticity by the state of curling, and can stretch through stress, and then generates the variation in length, thereby avoids pipeline from bending and hinders circulation, and provides the biggish activity space of user. 一種具長度變化功能之導流管，其包括有一可供液體流通之管體，其兩端分別形成有一入口端及一出口端，且此管體於入口端與出口端之間的部分具有一呈蜷曲狀態之捲曲段。此捲曲段藉由蜷曲狀態而具有彈性，可經受力而伸縮，進而產生長度上的變化，藉此避免管路彎折而阻礙流通，以及提供使用者較大的活動空間。
