PROBLEM TO BE SOLVED: To inexpensively provide a bathing assistive device allowing a lame person to have a bath by oneself.SOLUTION: A bathing assistive device 10 having the form of a rectangular plate, has a specific gravity smaller than that of hot water in a bath tub B. The length x between proximal sides 10b and 10b of the bathing assistive device 10 facing a long-side inner surface of the bath tub B is set shorter than an inner width X of the short side of the bath tub B. A projection part 12 is extendingly provided at a central part of one side 10a between the proximal sides 10b and 10b. An outer peripheral surface 14 is an inclined surface, where an inner angle of the outer peripheral surface 14 with respect to an upper surface 10c is formed into a sharp angle.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】足の不自由な人が独力で入浴できる入浴補助器具を安価に提供する。【解決手段】入浴補助器具10は、浴槽B内の湯よりも比重の小さな長方形板状のものである。浴槽Bの長辺側の内面に臨む入浴補助器具10の近接辺10b,10b間の長さxは、浴槽Bの短辺側の内幅Xよりも短めに設定されている。近接辺10b,10b間の一方の辺10aの中央部分には、突出部12が延設されている。外周面14は、上面10cに対する外周面14の内角が鋭角に形成された傾斜面となっている。【選択図】図1