PROBLEM TO BE SOLVED: To provide an absorbent article in which, a middle high part which serves as a ridge part is hardly folded and bent, due to compression force from both legs to inside of a width direction in a sleeping posture, which can maintain fitness to a body of a wearer, and liquid leakage hardly occurs.SOLUTION: An absorbent article 1 comprises an absorbent core 41 which has a vertically long length. The absorbent core 41 comprises a middle high part 43 on a center part in a lateral direction of an excretion part facing part. The middle high part 43 has thickness thicker than that of a peripheral area 44 of the absorbent core 41, and has a basis weight higher than that of the peripheral area. The absorbent core 41 has a groove part 45 which has thickness thinner than that of the peripheral area 44, and which has a basis weight lower than that of the peripheral area 44. The groove part 45 comprises: a middle high whole peripheral groove part 451 for surrounding the middle high part 43 and dividing the middle high part 43 and the peripheral area 44 and a side groove part 452 extending outward from a part corresponding to a side part along a vertical direction of the middle high area 43 on the middle high whole peripheral groove part 451.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】就寝姿勢における両脚からの幅方向内側に向けた圧縮力によって、隆起部した中高部が折れ曲がり難く、身体に対するフィット性が維持でき、液漏れが発生し難い吸収性物品を提供すること。【解決手段】吸収性物品1は、縦方向に長い吸収性コア41を備える。吸収性コア41は排泄部対向部における横方向の中央部に中高領域43を有する。中高領域43は、吸収性コア41の周辺領域44の厚みよりも厚みが厚く且つその坪量よりも坪量が高い。吸収性コア41は周辺領域44の厚みよりも厚みが薄く、且つ周辺領域44の坪量よりも坪量が低い溝部45を有する。溝部45は、中高領域43を囲んで中高領域43及び周辺領域44を分割する中高全周溝部451と、中高全周溝部451における中高領域43の縦方向に沿う側部に対応する部分から外方に向かって延びる側方溝部452とを有する。【選択図】図3