A diaper (11) is provided with an elastic abdomen-side waistline part (2), a back-side waistline part (3), and an absorptive body (4). The abdomen-side waistline part (2) has a cutout (20) at the center part in the width direction of an upper end region, and the number of sheets of members that are stacked in the abdomen-side waistline part (2) at least at a part of an edge region (20a) including an outer edge (200) of the cutout (20) is greater than the number of sheets of members that are stacked in the abdomen-side waistline part (2) at a leg line peripheral region (2a) which is a region positioned at both sides in the width direction of the absorptive body (4) within the lower end region of the abdomen-side waistline part (2).紙尿布(11)具備:伸縮性的腹側胴圍部(2)、背側胴圍部(3)、以及吸收性主體(4),腹側胴圍部(2)係於上端區域的寬度方向的中央部具有缺口(20),在包含缺口(20)的外緣(200)的邊緣區域(20a)的至少一部分中的層積在腹側胴圍部(2)的構件的片數,比在腹側胴圍部(2)的下端區域當中位於吸收性主體(4)的寬度方向的兩側的區域亦即腿圍周邊區域(2a)中的層積在腹側胴圍部(2)的構件的片數更多。2‧‧‧腹側胴圍部2a‧‧‧腿圍周邊部(腹側胴圍部的下端區域當中位於吸收性主體的寬度方向的兩側之區域)3‧‧‧背側胴圍部4‧‧‧吸收性主體4a‧‧‧一端部4b‧‧‧另一端部5‧‧‧接合部11‧‧‧紙尿布(短褲型用後即棄式紙尿布)20‧‧‧缺口20a‧‧‧邊緣區域21‧‧‧第1薄片22‧‧‧第2薄片23‧‧‧不同體薄片、設計薄片23a‧‧‧區域24‧‧‧腹側橡膠線30‧‧‧背側橡膠線41‧‧‧吸收體42‧‧‧頂部薄片43‧‧‧背部薄片200‧‧‧外緣230‧‧‧圖案430‧‧‧側部皺褶部
