This absorbent body (4) includes absorbent fibers (12F) and fiber blocks (11) including synthetic fibers (11F), a plurality of fiber blocks (11) being interlaced with each other, or fiber blocks (11) and absorbent fibers (12F) being interlaced. The mass ratio (fiber block ratio) of fiber blocks (11) contained with respect to the absorbent fibers (12F) is smaller on a skin-facing side (surface sheet (2) side) of the absorbent body (4) than on a non-skin-facing side (surface sheet (3) side) thereof. The fiber blocks (11) have a main body (110) defined by two mutually opposing base surfaces (111) and a skeleton surface (112) intersecting with both base surfaces (111).本發明之吸收體(4)含有包含合成纖維(11F)之纖維塊(11)與吸水性纖維(12F)，且複數個纖維塊(11)彼此或纖維塊(11)與吸水性纖維(12F)相互交絡。纖維塊(11)相對於吸水性纖維(12F)之含有質量比(纖維塊比率)係吸收體(4)之肌膚對向面側(正面片材(2)側)小於非肌膚對向面側(背面片材(3)側)。纖維塊(11)具有由相對向之2個基本面(111)及與兩基本面(111)交叉之骨架面(112)劃分形成之本體部(110)。
