The utility model at least comprises a track frame, a lock seat and a massage element.The rail frame has a limit space which is always worn on the upper and lower ends, and a longitudinal section groove is arranged on the front to connect the inside and outside of the limit space； the lock seat is arranged in the limit space, and the lock seat can only slide up and down along the limit space, and the lock seat is provided with a first screw fitting part matching with the section groove； the massage element is provided with a second screw fitting part which can be disassembled on the first screw fitting part, so as to The massage element and the lock seat can longitudinally adjust the height position along the limit space.With the overall configuration of the rail frame, lock seat and massage element, the massage height can be easily adjusted, and the massage element can be easily replaced, the massage position can be easily controlled, and the subsequent maintenance cost is lower.本新型至少由軌道架、鎖座及按摩元件所組成。所述軌道架具有一貫穿上下兩端之限位空間，且縱向的於正面設有一道連通限位空間內外之剖槽；鎖座係容設於限位空間，且令該鎖座僅能沿限位空間上下滑移，並於鎖座設有與剖槽匹配之第一螺合部；至於按摩元件則設有能拆裝於第一螺合部之第二螺合部，以使該按摩元件及鎖座能沿著限位空間而縱向調整高度位置。藉此軌道架、鎖座及按摩元件之整體配置，如此便能容易調整按摩高度，且具有可方便更換按摩元件之功能，以及按摩位置較易掌控之優點，更具有後續維護成本較低之特點。
