To suppress oozing of high-viscosity excretion liquid to a surface sheet by maintaining/improving absorption performance to the high-viscosity excretion liquid.SOLUTION: An absorber 4 of an absorbent article 1 comprises an absorbent core 4a, and a massive fiber layer 4b containing a plurality of massive fibers 40. The massive fiber has a core part 41 having a high fiber density, and hardly crushed, and a projection fiber part 42 projecting from the core part to the outside, having a low fiber density, and easily crushed. A specific volume of the massive fiber layer in application of pressure of 3 g/cmis a standard specific volume, a specific volume of the massive fiber layer in application of pressure exceeding 3 g/cmis a loading specific volume, a ratio of the loading specific volume to the standard specific volume is a specific volume ratio, and a ratio of change of the specific volume ratio to change of pressure added to the massive fiber layer is a rate of change. A rate of change in pressure change in 3-5 g/cmis from -0.12 to -0.025 (g/cm), and a rate of change in pressure change in 25-30 g/cmis from -0.02 to 0(g/cm).SELECTED DRAWING: Figure 3【課題】高粘度排泄液に対する吸収性能を維持・向上させ、表面シートへの高粘度排泄液の染み出しを抑制する。【解決手段】吸収性物品１の吸収体４は、吸収性コア４ａと、複数の塊状繊維４０を含む塊状繊維層４ｂと、を備える。塊状繊維は、繊維密度が高く、潰れ難いコア部４１と、コア部から外側に突出し、繊維密度が低く、潰れ易い突出繊維部４２と、を含む。３ｇ／ｃｍ２圧力印加時の塊状繊維層の比容積を基準比容積、３ｇ／ｃｍ２超えの圧力印加時の塊状繊維層の比容積を負荷比容積、基準比容積に対する負荷比容積の割合を比容積比、塊状繊維層に加わる圧力の変化に対する比容積比の変化の割合を変化率とする。３から５ｇ／ｃｍ２への圧力変化での変化率が－０．１２～－０．０２５（ｇ／ｃｍ２）－１であり、２５から３０ｇ／ｃｍ２の圧力変化での変化率が－０．０２～０（ｇ／ｃｍ２）－１である。【選択図】図３
