To provide a disposable wearing article capable of easily deforming an absorbent body and inhibiting the absorbent body from digging into the buttocks.SOLUTION: The diaper, which is a disposable wearing article, includes an absorbent body 40 including at least a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions, and disposed at least in the crotch region. The absorber 40 includes a front end edge 40a and a rear end edge 40b, straight portions 40c, 40d extending in parallel in the longitudinal direction Y from the front end edge 40a and the rear end edge 40b, and linear portions 40c, 40d extending between the straight portions 40c, 40d And a pair of side edges 40e which are positioned close to each other so that the interval in the lateral direction X is narrowed and are positioned on the inner skin opposing surface in the lateral direction X of both side edges 40e and extend in the longitudinal direction Y And has a pair of groove grooves 42. The pair of concave groove 42 is formed by a narrow portion 42 a in which the interval in the lateral direction X becomes narrow and an inclined portion 42 b in which the interval in the lateral direction X gradually increases from the narrow portion 42 a toward the rear end edge 40 b And is positioned inward of the rear end edge 40 b.(FIG.【課題】吸収体が容易に変形するとともに、吸収体が臀部に食い込むことを抑えることができる使い捨て着用物品を提供する。【解決手段】使い捨て着用物品であるおむつは、前ウエスト域と、後ウエスト域と、前後ウエスト域の間に位置するクロッチ域とを含み、少なくともクロッチ域に配置された吸収体40とを含む。吸収体40は、前端縁40aおよび後端縁40bと、前端縁40aおよび後端縁40bから互いに並行して縦方向Yへ延びる直状部40c,40dと、直状部40c,40dの間に位置して横方向Xの間隔が狭くなるように互いに近接する1対の両側縁40eとを有するとともに、両側縁40eの横方向Xにおける内方の肌対向面に位置して縦方向Yへ延びる1対の凹条溝42を有する。1対の凹条溝42は、横方向Xの間隔が狭くなる幅狭部42aと、幅狭部42aから後端縁40bへ向けて横方向Xの間隔が徐々に大きくなる傾斜部42bとを有し、後端縁40bの内方に位置する。【選択図】図3
