PROBLEM TO BE SOLVED: To provide a disposable diaper which can achieve a wearing feeling close to the wearing feeling of underwear and specifically a comfortable fitting feeling as the disposable diaper does not disturb movements of a wearer while maintaining comfort and absorption performance after excretion.SOLUTION: A disposable diaper 10 includes: a leg expanding and contracting part formed along a leg opening part and a pair of crotch expanding and contracting parts which are respectively disposed on both outer sides in a product width direction relative to a center of the product width direction of an absorber in a crotch area and can expand and contract in a product longitudinal direction or the product width direction. A low expanding and contracting region with a rate of expansion and contraction that is lower than that of the crotch expanding and contracting part is provided between the leg expanding and contracting part and the crotch expanding and contracting part.COPYRIGHT: (C)2015,JPO&INPIT【課題】排泄後における快適性や吸収性能を維持しつつ、下着に近い履き心地、具体的には着用者の動きを妨げない良好な装着感を実現し得る使い捨ておむつを提供する。【解決手段】 使い捨ておむつ10は、脚回り開口部に沿って形成されているレッグ伸縮部と、股下域において吸収体の製品幅方向の中心に対する製品幅方向両外側にそれぞれ配置され、製品長手方向または製品幅方向に伸縮可能な一対のクロッチ伸縮部と、を備える。レッグ伸縮部とクロッチ伸縮部との間には、クロッチ伸縮部よりも伸縮率が低い低伸縮領域が形成される。【選択図】図1