Absorbent article

An absorbent article having a lengthwise direction and a widthwise direction, and comprising a top sheet provided on the skin side, a liquid-impermeable back sheet provided on the clothing side, and a liquid-retaining absorbent body provided between the top sheet and the back sheet,

• wherein the top sheet is a resin sheet having perforated regions in which openings are formed and non-perforated regions in which openings are not formed,
• the perforated regions being provided at least in an excretion hole-corresponding region that corresponds to an excretion hole for body fluid of the wearer,
• the top sheet having a blood modifying agent layer on a surface of at least the excretion hole-corresponding region, and
• the blood modifying agent layer consisting essentially of a blood modifying agent having an Inorganic Organic Balance (IOB) of 0 to 0.60, a melting point of no higher than 45° C. and a water solubility of no greater than 0.05 g in 100 g of water at 25° C., wherein the blood modifying agent layer is configured to infiltrate between blood cells for preventing formation of a rouleau structure by blood cells in menstrual blood.