PROBLEM TO BE SOLVED: To minimize as much as possible replacement of a whole diaper that is caused by feces.SOLUTION: A diaper has: a bag body P capable of mounting a bag mouth 9 on a skin surface surrounding an anus Ma of a wearer M while receiving feces without leakage with an adhesion part 10 included in the bag mouth 9 and a diaper body D having a receiving space 1 of the bag body P between a diaper outer surface 2 and a diaper inner surface 3, and including a taking in-and-out opening part 5 of the bag body P in communication with the receiving space 1 on a portion being the diaper inner surface 3 and arranged almost at the lower part of the crotch of the diaper wearer M. In the state where the side of the bag mouth 9 of the bag body P is positioned inside the diaper from the opening part 5, an extra portion of the bag body P is received in the receiving space 1.COPYRIGHT: (C)2015,JPO&INPIT【課題】大便に起因した、おむつ全体の取り替えを、できるだけ少なくする。【解決手段】袋口9に備えられた粘着部10をもって大便を漏洩なく受容する状態で着用者Mの肛門Maを取り巻く皮膚面に前記袋口9を取り付け可能に構成された袋体Pと、おむつ外面2とおむつ内面3との間に前記袋体Pの収納空間1を有すると共に、おむつ内面3であっておむつ着用者Mの略股下に配される部分に前記収納空間1に連通した前記袋体Pの出し入れ開口部5を備えたおむつ本体Dとを有する。前記開口部5から前記袋体Pの袋口9側をおむつ内側に位置させた状態でこの袋体Pのその余の部分を前記収納空間1に収納させてなる。【選択図】図1