An absorbent article (1) for the absorption of menstrual bleeding that is provided with a liquid-permeable front sheet (2) forming a skin-facing surface, a back sheet (3) forming a non-skin-facing surface, and an absorbent body (4) disposed between the front and back sheets, and that has a longitudinal direction (X) along the front-back direction of the wearer of the absorbent article and a transverse direction (Y) perpendicular to the longitudinal direction, wherein a lateral leak-preventing groove (81) extending in the longitudinal direction (X) is provided on both sides of the longitudinal-direction center line (CL) on the skin-facing surface, and the lateral leak-preventing grooves (81) have a configuration in which a plurality of short grooves (81a) to (81c), in which the front sheet (2) is recessed into the absorbent body (4), are arranged in the longitudinal direction (X) such that a gap (81d) is provided between each of the short grooves. A blood coagulant is included in a lower member disposed in a position which is closer to the back sheet (3) than the front sheet (2), and the gaps (81d) in the lateral leak-preventing grooves (81) or the vicinity of the gaps on the inner side in the transverse direction (Y) overlap with sites (9) where the blood coagulant is disposed in the lower member.Linvention porte sur un élément absorbant (1) pour labsorption du saignement menstruel. Il est pourvu dune feuille avant tournée vers la peau et perméable aux liquides (2), dune feuille arrière ne faisant pas face à la peau (3), dun corps absorbant (4) disposé entre les feuilles avant et arrière dans le sens longitudinal (X) avant-arrière, et dans le sens transversal (Y) perpendiculaire de lutilisateur. Une rainure latérale (81) sétendant dans le sens longitudinal (X) empêchant les fuites est disposée des deux côtés de la ligne centrale (CL) de la surface tournée vers la peau. Les rainures latérales anti-fuites (81) ont une multitude de rainures courtes (81a ,b ,c) dans les
