Provided is an absorptive article which fits the absorbent core to the buttocks of the wearer and which can suppress leaking. This absorptive article (1) comprises an excretion orifice contact region (S1) which faces towards the excretion orifice of the wearer, a rear region (S2) positioned to the rear of the excretion orifice contact region (S1), and an absorbent core (31) which is arranged in the excretion orifice contact region (S1) and the rear region (S2). The absorbent core (31) of the rear region (S2) is provided with a lengthwise slit (42) which is arranged in the center of the absorbent core (31) in the width direction (W) and which extends in the length direction (L) of the absorptive article (1), and with auxiliary slits (43) which are continuous with the lengthwise slit (42) and extend outwards in the width direction (W) from the lengthwise slit (42). In the width direction (W), the outside edges (43E) of the auxiliary slits (43) are positioned inwards of the outside edges (31E) of the absorbent core (31) in the rear region (S2).本發明提供一種,讓吸收芯對裝用者的臀部貼合,可抑制洩漏的吸收性物品。吸收性物品(1),是具有:與裝用者的排泄口對置的排泄口抵接域(S1);比排泄口抵接域更位於後方的後側域(S2);以及被配置在排泄口抵接域與後側域的吸收芯(31)。在後側域的吸收芯設有:被配置在吸收芯的寬邊方向的中央,朝吸收性物品的前後方向延伸的前後細縫(42);以及和前後細縫相連,且從前後細縫朝寬邊方向的外側延伸的輔助細縫(43)。輔助細縫的外側緣(43E),是比後側域的吸收芯的外側緣(31E)更位在寬邊方向內側。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31E‧‧‧吸收芯的外側緣311‧‧‧第1區域312‧‧‧第2區域313‧‧‧第3區域33‧‧‧中高部41‧‧‧寬邊細縫41E‧‧‧外側緣42‧‧‧前後細縫(第1曲部)43E‧‧‧外側緣43‧‧‧輔助細縫(第2曲部)80‧‧‧壓榨部81‧‧‧排泄口壓榨部82‧‧‧後側壓榨部83‧‧‧臀翼壓榨部L‧‧‧前後方向W‧‧‧寬邊方向
