PROBLEM TO BE SOLVED: To reduce discomfort and an unpleasant feeling in wearing an absorbent body even when the thin type absorbent article has an absorber that is relatively thin and hard.SOLUTION: In a sanitary napkin 1 in which an absorber 4 is interposed between a liquid permeable surface sheet 3 and a back surface sheet 2, at least a back side shape line 10 in the absorber 4 is formed to be wavy. Consequently, since a back side end part of the absorber 4 is easily deformed along a projection part and a recessed part of the shape line in wearing to easily follow the curve of a body, the discomfort and the unpleasant feeling can be reduced when the back side end part is brought into contact with a skin in wearing even in a case of a thin type absorbent article with the absorber 4 that is relatively thin and hard.COPYRIGHT: (C)2016,JPO&INPIT【課題】吸収体が比較的薄くて固い薄型吸収性物品の場合であっても、装着時の違和感や不快感を軽減する。【解決手段】透液性表面シート3と裏面シート2との間に吸収体4が介在された生理用ナプキン1において、前記吸収体4は、少なくとも後側形状線10が波状に形成される。これにより、装着時に吸収体4の後側端部が形状線の凸部及び凹部に沿って変形しやすく、身体の丸みに沿いやすくなるため、吸収体4が比較的薄くて固い薄型吸収性物品の場合であっても、装着時に後側端部が肌に当たった際の違和感や不快感が軽減できるようになる。【選択図】図1