A disposable diaper, having a longitudinal direction and a lateral direction intersecting the longitudinal direction, including an absorbent main body having an absorbent body that absorbs excreta, a back waist part located on one end of the absorbent main body, and an abdominal waist part located on an other end of the absorbent main body, the absorbent body having both side in the lateral direction being provided with a pair of embossed lines formed b embossing from a skin side of the absorbent body, and the embossed lines each including a protrusion point, protruding inward in the lateral direction, located in a center of the disposable diaper in the longitudinal direction in a midsection of the disposable diaper or on a back waist part side with respect to the center, and a back line, linear of curved outward, extending outward in the lateral direction from the protrusion point, as a starting point, toward the back waist part in the longitudinal direction.一種用後即棄式紙尿布,係具有縱方向、和與前述縱方向交叉的橫方向,並具備:具有吸收排泄物的吸收體之吸收性本體;位於前述吸收性本體的一端側之背部側腰圍部;位於前述吸收性本體的另一端側之腹部側腰圍部,其特徵為:在前述吸收體的前述橫方向之兩側部,設有藉由自前述吸收體的肌膚側進行壓花加工所形成的一對壓花線,前述壓花線係具備:位於前述用後即棄式紙尿布的中央部的前述縱方向上之前述用後即棄式紙尿布的正中央位置或較該正中央位置靠近背部側腰圍部側之位置,且朝前述橫方向之內側突出的凸頂部;和以前述凸頂部作為起始點,朝前述橫方向之外側且前述縱方向之前述背部側腰圍部側延伸的直線狀或朝外側彎曲的曲線狀之背部側線。1‧‧‧紙尿布10‧‧‧吸收性本體10a‧‧‧一端部10b‧‧‧另一端部11‧‧‧吸收體11a‧‧‧背部側重疊部11b‧‧‧非重疊部11c‧‧‧腹部側重疊部12‧‧‧側緣12a‧‧‧背部側重疊部側緣12b‧‧‧非重疊部側緣12c‧‧‧腹部側重疊部側緣13‧‧‧第一缺口14‧‧‧第二缺口15‧‧‧第三缺口16‧‧‧吸收體外側部17‧‧‧後端22‧‧‧上層芯材繞包層23‧‧‧下層芯材繞包層24‧‧‧頂面薄片構件26‧‧‧側翼片28‧‧‧頂點29‧‧‧LSG橡膠線30‧‧‧背部側腰圍部30a‧‧‧兩緣部30b‧‧‧下端32‧‧‧插圖薄片33‧‧‧背部側橡膠線40‧‧‧腹部側腰圍部40a‧‧‧兩緣部40b‧‧‧下端42‧‧‧插圖薄片43‧‧‧腹部側橡膠線50‧‧‧壓花線52‧‧‧第一凸頂部53‧‧‧第二凸頂部54‧‧‧第三凸頂部56‧‧‧背部側線57‧‧‧腹部側線58‧‧‧中央線58、58a‧‧‧第一中央線58b‧‧‧第二中央線F‧‧‧折痕LG‧‧‧腳皺褶LSG‧‧‧腳側皺褶R1‧‧‧第一區域R2‧‧‧第二區域
