[Problem] To provide a disposable diaper which is comfortable to wear. [Solution] This disposable diaper comprises a top sheet (1), a back sheet (2), an absorber (3) and a stretchable sheet (4). The stretchable sheet (4) is composed by having a base material sheet (41) sandwich multiple elastic stretchable members (42) disposed therein in an extended state, said multiple elastic stretchable members (42) being disposed along the width direction of the disposable diaper and spaced apart at intervals in the longitudinal direction. When viewed in the width direction, the stretchable sheet (4) has an overlapping portion (43) which includes a region that overlaps with a part of the absorber (3). In the overlapping portion (43), the multiple elastic stretchable members (42) are disposed continuously along the width direction. The multiple elastic stretchable members (42) are not joined to the sides of the base material sheet (41) at the central region (43a) of the overlapping portion (43), said central region (43) being where part of the absorber (3) is overlapped, and are joined to the sides of the base material sheet (41) at the side regions (43b) of the overlapping portion (43) which are positioned to the outside of the central region (43a) in the width direction.本發明提供一種穿著感優異舒適的拋棄式尿布，該拋棄式尿布具備：上片1、背片2、吸收體3、及伸縮片4。伸縮片4藉著在基材片41間沿著拋棄式尿布的寬度方向朝長度方向保持間隔地將複數條彈性伸縮構件42以伸長狀態配置來構成。從寬度方向觀察時，伸縮片4具有重疊部分43，該重疊部分包含與吸收體3之一部分重疊的區域。複數條彈性伸縮構件42在重疊部分43沿著寬度方向連續地配置。在重疊部分43與吸收體3之一部分重疊的中央區域43a，複數條彈性伸縮構件42並未接合於基材片41間，而是在位於重疊部分43之中央區域43a的寬度方向外側的側邊區域43b，複數條彈性伸縮構件42接合於基材片41間。
