A kind of leg massager,It includes: a shell; One massage unit includes a control piece and two massage groups,And the massage unit runs through control piece and massage group by a mandrel,The control piece, which runs through, a drive hole and a limit hole,It is provided with a guide pad in another what limit hole,One guiding leverage wears the limit hole of what control piece,And what guiding rod outer surface intersects in 8-shaped equipped with a round-trip groove,And the round-trip groove is worn by guide pad,One actuator, which extends driving by a deceleration mechanism, first,Second body of rod,Allow actuator lock what enclosure interior,First body of rod passes through guide bar,And second body of rod wears what drive hole,It is comprehensive by above structure,Enable to carry out massaging action and past polyslip at massage group what leg massage slot.一種腿部按摩裝置,其包括有:一殼體;一按摩單元包含有一控制件與二按摩組,且該按摩單元由一心軸貫穿控制件與按摩組,該控制件貫穿有一驅動孔與一限位孔,另於限位孔內設置有一導向塊,一導引桿係穿設於控制件之限位孔,而於導引桿外表面呈8字形交叉設有一往返槽溝,且該往返槽溝受到導向塊之穿設,一驅動件由一減速機構延伸驅動有第一、第二桿體,讓驅動件鎖固於殼體內部,該第一桿體穿過導引桿,而該第二桿體穿設於驅動孔,綜由上述結構,使按摩組能於腿部按摩槽處進行按摩動作與往復滑移。