An exercise assisting mechanism for a bathtub comprises a first bracket body having a plurality of detachable support bottoms, a plurality of support transverse portions, a plurality of support longitudinal portions connected between the support bottoms and the support transverse portions, and a plurality of assembling longitudinal portions connected to the support longitudinal portions, a housing mounted on the first bracket body and defined with a tank and a plurality of housing portions for insertion of the assembling longitudinal portions, a second bracket body detachably fixed to the first bracket body, located on the housing and provided with a plurality of connecting longitudinal portions fixed to the assembling longitudinal portions, two parallel connecting transverse portions, two transverse rod portions connected between the connecting longitudinal portions, and two longitudinal rod portions connected to the transverse rod portions, at least one traction unit, and a screen, thus improving rehabilitation and sports effects.本發明係為一種浴缸運動輔助機構,包含:一第一支架體,具有能夠拆離地固設的複數支撐底部、複數支撐橫架部、複數連接各該支撐底部與各該支撐橫架部之間的支撐縱架部、及複數連接各該支撐縱架部的組設縱架部;一浴缸殼體,套置於該第一支架體,並具有一浴槽、及複數供各該組設縱架部穿出的殼體部;一第二支架體,能夠拆離地固設在該第一支架體且位於該浴缸殼體上,並具有複數固定於各該組設縱架部的連接縱架部、二相互平行且相距一段距離地連接在各該連接縱架部的連接橫架部、二連接各該連接縱架部之間的橫桿部、二連接各該橫桿部的縱桿部;至少一設於該縱桿部及橫桿部連接處並供握持拉動的牽引單元;一設於該縱桿部及橫桿部的螢幕,藉以提升復健、運動的效果、同時達到提升組裝便利性的目的。10‧‧‧第一支架體11‧‧‧支撐底部12‧‧‧支撐橫架部13‧‧‧支撐縱架部14‧‧‧組設縱架部20‧‧‧浴缸殼體22‧‧‧殼體部30‧‧‧第二支架體31‧‧‧連接縱架部311‧‧‧套置槽312‧‧‧壓抵環部32‧‧‧連接橫架部33‧‧‧螺絲331‧‧‧頭部332‧‧‧身部34‧‧‧螺帽40‧‧‧運動支架41‧‧‧握持部50‧‧‧牽引單元60‧‧‧螢幕
