The present invention provides an absorbent article which is easily adhered to a gluteal cleft and has excellent use feeling. Compression grooves are formed in bilateral symmetry on both sides of the longitudinal center line of the sanitary napkin, or a compression groove reference point is formed where lines that extend from the center lines of the compression grooves intersect at a position corresponding to the front end of the wearer's gluteal cleft, and a left-right pair of contour inflection points are formed on the contour line at the rear end of the physiological sanitary napkin, the contour inflection point being formed in a wave shape having left-right symmetry. Easily deformed section, which uses the compression groove as a base end and is easily deformed in the transverse direction of the sanitary napkin, is provided on or in the vicinity of the two imaginary lines S, which join the compression groove reference point and the left and right contour line inflection points and have a separation width that is gradually widen toward the rear side.一種容易貼合於臀裂部且使用感優異的吸收性物品。形成分別左右對稱地形成於生理用衛生棉的長邊方向中心線的兩側的壓榨槽彼此、或者壓榨槽的中心線之延長線彼此在與穿戴者的臀裂部前端對應的位置交叉的壓榨槽基點，並且在生理用衛生棉的後端的形成為左右對稱的波狀的外形線，左右成對地形成有外形線拐點。在分別連結壓榨槽基點與左右的外形線拐點並且分離寬度朝向後側逐漸擴大的2條假想線S上或者其附近，存在使以壓榨槽作為基端的在生理用衛生棉的橫截方向上的變形容易產生的基於壓榨槽的易變形部。
