A kind of electric telescopic stick,Include: a lever,Cane in one outer cane and one,The inside of lever is installed with battery and a driving mechanism,Driving mechanism include at least a motor,One worm screw,One helical gear and a screw rod,Outer cane and interior cane are all a kind of tubular element,The inside diameter surface of outer cane has the guide channel extended along parallel axis direction,One end of outer cane is fixedly connected with what lever,Interior cane is arranged among the outer cane of what in a coaxial relationship and can slide along the axial direction of outer cane,The top of interior cane is fixedly provided with a nut,Nut has towards a radial outside guiding block outstanding,Guiding block can be slided along the extending direction of the guide channel of outer cane,One end of screw rod and helical gear are coupled,Screw rod is rotationally protruded into the axial direction of interior cane with coaxial relation and screwed togather together with nut,Screw rod rotation is driven through worm screw and helical gear when motor rotates,Stretching motion further is carried out along the axial direction of outer cane using cane in screw drive,It realizes elongation or shortens the function of the length of crutch.一種電動伸縮拐杖，包括：一握柄、一外杖和一內杖，握柄的內部裝設有電池及一驅動機構，驅動機構至少包含一馬達、一蝸桿、一斜齒輪和一螺桿，外杖和內杖皆為一種管狀元件，外杖的內徑表面具有沿著平行軸心方向延伸的一導引槽，外杖的一端固定連接於握柄，內杖以同軸的關係設置於外杖之中並可沿著外杖的軸向方向滑動，內杖的頂端的內部固設有一螺帽，螺帽具有朝向徑向外側突出的一導引塊，導引塊可沿著外杖的導引槽的延伸方向滑動，螺桿的一端和斜齒輪聯結，螺桿以同軸關係可轉動地伸入內杖的軸向並與螺帽螺合在一起，馬達轉動時透過蝸桿和斜齒輪帶動螺桿轉動，進一步利用螺桿驅動內杖沿著外杖的軸向方向進行伸縮運動，實現伸長或是縮短拐杖之長度的功能。
