An object of the present invention is to provide a disposable diaper that can suppress the leakage of flights by the three-dimensional gather. A three-dimensional gathers 15 of the disposable diaper 1 includes a upright non proximal portion, and contracts in the longitudinal direction, the upright can be upstanding portion on the skin side of the thickness direction base end portion as a fulcrum by an elastic member, including. Proximal end has a first proximal portion which is disposed on both outer sides in the longitudinal direction than the standing part, and a second proximal portion disposed on the outer side in the width direction than the upright portion. Upright portion has a joint 153 side sheet 14 to each other are joined. Junction, straddle the longitudinal direction of the center 1LC of disposable diapers, it is separated from the each of the first base end. Longitudinal length L4 of the junction of the rear region is longer than the longitudinal length L5 of the junction of the front region.FIELD 3【課題】立体ギャザーによって便の漏れを抑制できる使い捨ておむつを提供する。【解決手段】使い捨ておむつ1の立体ギャザー15は、起立不能な基端部と、弾性部材によって長手方向に収縮し、基端部を支点として厚さ方向の肌側に起立可能な起立部と、を含む。基端部は、起立部よりも長手方向の両外側に配置される第1基端部と、起立部よりも幅方向の外側に配置される第2基端部と、を有する。起立部は、サイドシート14同士が接合している接合部153を有する。接合部は、使い捨ておむつの長手方向の中心1LCを跨ぎ、第1基端部のそれぞれと離間している。後側域の接合部の長手方向の長さL4は、前側域の接合部の長手方向の長さL5よりも長い。【選択図】図3
