To provide a diaper (1) the diaper preventing stool excreted in the diaper from attaching to the hips, reducing burden of a tough care of wiping off the stool, producing ease and causing a care-taker to empathically care at east and (2) the diaper reducing the cost.SOLUTION: A diaper includes a pack stuck thereto, where the pack is so configured that, once being defecated, the pack does not leak it even by being pressed from the outside. A wearer wearing the diaper places a portable toilet seat on a seat surface of a reclining chair, sits on a center of the portable toilet seat, and defecates. Further, even when the wearer defecates in a standing posture, the pack is configured to be able to collect the stool cleanly. Accordingly, only a small amount of a material is sufficient for the diaper and the manufacture is facilitated so as to suppress the cost.SELECTED DRAWING: Figure 1【課題】(1)おむつに排せつされた大便がほとんどお尻に付着せずにすむおむつを提供し、大便の拭き取りのきつい介護の負担を削減し、ゆとりを生み出し、ゆとりを持って親身に介護できるおむつの提供。(2)コストの軽減を図るおむつの提供。【解決手段】排便されたら外部から圧迫されても漏れることのないパックを接着したおむつを着用して、ポータブル便座をリクライニングチェアの座面に置いてポータブル便座の中央に座って排泄する。また、立った状態で排泄しても綺麗に採便できる。おむつの素材が少量ですみ、製造が容易な為、コストが抑えられる。【選択図】図1