Provided is an absorptive article which allows a rear region of the absorptive article to be worn in the appropriate position and which fits the absorbent core to the buttocks of the wearer to suppress leaking. This absorptive article (1) comprises an excretion orifice contact region (S1) which faces towards the excretion orifice of the wearer, the rear region (S2) which is positioned to the rear of the excretion orifice contact region (S1) and which is longer in the length direction than the excretion orifice contact region, and an absorbent core (31) which is arranged in the excretion orifice contact region and the rear region. The absorbent core in the rear region comprises a first region (311), and also a second region (312) and a third region (313) which are positioned outwards of the first region in the width direction. In the first region, a lengthwise slit (42) is provided which extends in the length direction of the absorptive article and which is configured such that the absorbent core in the rear region protrudes towards the wearer. The lengthwise slit (42) is visible from surface of the absorptive article that faces towards the skin, and extends in the length direction of the absorptive article.本發明在提供一種，可將吸收性物品的後側域安裝在適當的位置，且讓吸收芯對裝用者的臀部貼合，藉此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，且前後方向的長度比排泄口抵接域更長的後側域(S2)；以及被配置在排泄口抵接域與後側域的吸收芯(31)。後側域的吸收芯，是具有：第1區域(311)、與分別位在第1區域的寬邊方向的外側的第2區域(312)及第3區域(313)。在第1區域，是設有前後縫隙(42)，其是構成朝吸收性物品的前後方向延伸，且後側域的吸收芯可朝裝用者側隆起。前後縫隙(42)，是從吸收性物品的肌膚對置面側可視認，且朝吸收性物品的前後方向延伸。
