PROBLEM TO BE SOLVED: To provide an aid for preventing a body fluid from leaking, which covers a body fluid absorptive article from the outside so as to correspond to the position of a genital organ when mounting the body fluid absorptive article such as a diaper or a urine absorbent pad, and presses the body fluid absorbent article by the peripheral wall ends of the aid, thereby suppressing an unpleasant feeling in mounting, and controlling a urinating direction.SOLUTION: The aid for mounting the body fluid absorptive article is formed in a substantially semi-cylindrical shape wherein two faces including at least a lower surface are opened and the external side of the body fluid absorbent article is stored inside by hauling. Then, the aid covers the body fluid absorptive article from the outside to obtain a space between the body fluid absorptive article and a sexual organ. Consequently, a user urinates without an oppressive feeling and obtains a comfortable wearing feeling. Besides, since the body fluid absorbent article is compressed and deformed by mounting force to hardly cause the fluid to easily permeate and to prevent the article from floating up from skin, the horizontal leak is prevented even when the user lies in a lateral position.COPYRIGHT: (C)2011,JPO&INPIT【課題】おむつや尿吸収パッドのような体液吸収性物品の装着時に、性器の位置に対応するように体液吸収性物品の外方から被せ、その周壁端部で体液吸収性物品を押圧して、装着用時の不快感を抑え、排尿方向をコントロールし、体液の漏れを防止する補助具に関する。【解決手段】体液吸収性物品の装着用補助具を、少なくとも下面を含む2面が開放し、内部に手繰り状に体液吸収性物品の外装側を収容する略半筒状に形成することにより、この補助具を体液吸収性物品の外方から被せ、体液吸収性物品と性器との間に空間が得られて、圧迫感がなく放尿でき、快適な着用感が得られ、また装着力による体液吸収性物品の圧縮変形で、透液し難く、この物品が肌から浮き上がることもないので、側臥位時であっても横漏れを防止することが出来る。【選択図】図1