In order to maintain and improve the ability to absorb highly viscous excretory fluids and prevent the highly viscous excretory fluids from soaking through a surface sheet, this absorbent article (1) has an absorbent body (4) provided with an absorbent core (4a) and a fiber mass layer (4b) comprising a plurality of fiber masses (40). The fiber masses comprise: a core part (41) that has a high fiber density and is difficult to crush； and a projecting fiber part (42) that projects outward from the core part, has a low fiber density, and is easy to crush. The specific volume of the fiber mass layer when a pressure of 3 g/cm2 is applied is referred to as reference specific volume, the specific volume of the fiber mass layer when a pressure of more than 3 g/cm2 is applied is referred to as load specific volume, the ratio of the load specific volume to the reference specific volume is referred to as specific volume ratio, and the ratio of a change in the specific volume ratio to a change in the pressure applied to the fiber mass layer is referred to as change ratio. A pressure change from 3 to 5 g/cm2 corresponds to a change ratio of -0.12 to -0.025 (g/cm2)-1, and a pressure change from 25 to 30 g/cm2 corresponds to a change ratio of -0.02 to 0 (g/cm2)-1.本發明的目的是將對於高黏度排泄液的吸收性能維持、提高，抑制高黏度排泄液朝表面薄片染出。本發明的吸收性物品(1)的吸收體(4)，是具備：吸收性芯(4a)、及包含複數塊狀纖維(40)的塊狀纖維層(4b)。塊狀纖維，是包含：纖維密度較高，壓潰困難的芯部(41)；及從芯部朝外側突出，纖維密度較低，壓潰容易的突出纖維部(42)。將3g/cm2的壓力外加時的塊狀纖維層的比容積設成基準比容積，將超過3g/cm2的壓力外加時的塊狀纖維層的比容積設成負荷比容積，將對於基準比容積的負荷比容積的比率設成比容積比，將對於施加於塊狀纖維層的壓力的變化的比容積比的變化的比率設成變化率。朝3至5g/cm2的壓力變化中的變化率是-0.12～-0.025(g/cm2)-1，朝25至30g/cm2的壓力變化中的變化率是-0.02～0(g/cm2)-1。
