A massage device includes a base, a drive unit, and a transmission unit. The drive unit is coupled to the base. The transmission unit is disposed at one side of the base. The drive unit includes a drive member to drive a rotary shaft for driving massage members. One end of the rotary shaft is provided with a unidirectional bearing and a first bevel gear. The unidirectional bearing is able to control the rotation of the first bevel gear. The transmission unit includes two positioning blocks and a worm shaft connected between the two positioning blocks. The worm shaft is provided with a second bevel gear and a movable member thereon. The first bevel gear meshes with the second bevel gear. When the first bevel gear is rotated, the second bevel gear is driven to link other parts so that the drive unit can slide on the base.一種按摩裝置之結構改良，其包含有：一基座、一驅動裝置與一帶動件，其中，該驅動裝置係係結合在基座上，且基座旁一側製設該帶動件，該驅動裝置係能透過一驅動件驅動一轉動軸，以提供按摩元件的帶動，且轉動軸一端係接設有一單向軸承與一第一傘型齒，該單向軸承係能控制第一傘型齒轉動與否，該帶動件係由兩定位塊中間設有一渦桿而成，且渦桿上設有一第二傘型齒與一行動件，其第一傘型齒係與第二傘型齒相互嚙合，令第一傘型齒在轉動時能藉由第二傘型齒來連動帶動件之其它元件，令整個驅動裝置能在基座上做滑移，藉由上述結構，即可得到移動式之按摩或定點式之按摩。
