PROBLEM TO BE SOLVED: To provide a disposable diaper which can be easily pulled up to a wearers groin part, which enables adjustment of fitness for the wearer, which reliably maintains connection means, and which can be easily attached.SOLUTION: First and second engaging parts 40 and 41 are provided on both side parts of outer and inner surfaces of a front part of an exterior sheet 20, respectively. Inner surfaces of support members 45 provided on both side parts of an inner surface of a back part are provided with third and fourth engaging parts 42 and 43 that do not overlap each other when the support members 45 overlap each other. When the exterior sheets 20 are connected together, the first and fourth engaging parts 40 and 43 are engaged with each other, and the second and third engaging parts 41 and 42 are engaged with each other.COPYRIGHT: (C)2015,JPO&INPIT【課題】着用者の股間部に容易に引上げられ、着用者へのフィット性の調整が行え、連結手段が確実に維持され、容易に装着できる使い捨ておむつを提供する。【解決手段】外装シート20の前身頃の外内面の両側部に第1,2係合部40,41を設け、後身頃の内面の両側部に設けられた支持部材45の内面に、支持部材45を重ね合わせた場合に、相互に重なり合わない第3,4係合部42,43を設け、外装シート20の連結時に、第1係合部40と第4係合部43とが係合し、第2係合部41と第3係合部42とが係合する構成によって解決する。【選択図】図1