In order to improve fit on the wearers buttocks and to suppress excrement leakage, an absorbent core (31) of this absorbent article comprises a pair of first low-basis-weight regions (41) which extend from both outside edges of the absorbent core inwards in the width direction, and a second low-basis-weight region (42) which extends in the longitudinal direction along a centerline connecting the width-direction center in the rear area. The basis weight of the first low-basis-weight regions and the basis weight of the second low-basis-weight region are less than the basis weight of the outside edges of the absorbent core in the rear area (S3). The pair of first low-basis-weight regions (41) are separated in the width direction, and, of the center area (S1), the rear area (S3) and the intermediate area (S4), are arranged only in the intermediate area (S4).提高對裝用者的臀部的貼合性,抑制排泄物的漏出。吸收性物品的吸收芯(31)具有:從吸收芯的兩外側緣朝寬邊方向內側各自延伸的一對的第1低基重區域(41)、以及在後側域沿著連結寬邊方向中心的中心線朝前後方向延伸第2低基重區域(42)。第1低基重區域的基重及第2低基重區域的基重,是比後側域(S3)中的吸收芯的外側緣的基重更低。一對的第1低基重區域(41),是在寬邊方向分開,在中央域(S1)、後側域(S3)、及中間域(S4)中僅被配置在中間域(S4)。1‧‧‧吸收性物品3‧‧‧翼片3LC‧‧‧前後方向的中心4‧‧‧臀翼10‧‧‧肌膚面薄片11‧‧‧表面薄片12‧‧‧側薄片30‧‧‧吸收體31‧‧‧吸收芯33‧‧‧中高部41‧‧‧第1低基重區域42‧‧‧第2低基重區域80‧‧‧壓榨部81‧‧‧第1側壓榨部82‧‧‧第2側壓榨部91‧‧‧伸縮性構件CL‧‧‧中心線W‧‧‧寬邊方向S1‧‧‧中央域S2‧‧‧前側域S3‧‧‧後側域S4‧‧‧中間域
