< Topic >Power source, the transmission gear and the multiple top and bottom hitting devices are included, the massage device which does the top and bottom hitting is offered.SolutionsIt provides the unidirectional bearing in transmission gear, 30 at the time of normal rotation, slips to the direction of top and bottom hitting device 50. When the power which is output from aforementioned power source slips, passing aforementioned transmission gear 30, when it is transmitted to aforementioned top and bottom hitting device 50 in the normal rotation, is transmitted by aforementioned top and bottom hitting device 50 with reversal the top and bottom hitting is done.< Choice figure >Drawing 2【課題】動力源、伝動装置及び複数の上下叩き装置を含み、上下叩きを行うマッサージ装置を提供する。【解決手段】伝動装置30には単方向軸受を設け、正転の時、上下叩き装置50の方向に空転させる。前記動力源から出力される動力は、前記伝動装置30を経て、正転で前記上下叩き装置50に伝達されると空転を行い、逆転で前記上下叩き装置50に伝達されると上下叩きを行う。【選択図】図2