A pants type absorbent article (1) includes a ventral sheet member (2), a dorsal sheet member (3), and an absorbent main body (4) that includes an absorbent core (5). Both edge portions of both sheet members (2, 3) are bonded to each other to form a pair of side seal portions (S, S). An inseam portion (C) is formed between both sheet members (2, 3). The absorbent core (5) forms a constriction portion (5c) in a central portion in a longitudinal direction thereof. Each of the ventral and dorsal sheet members (2, 3) includes an elastic member (7) that is placed in a stretched state in a width direction thereof. The constriction portion (5c) has a front constriction portion (5f) that overlaps with the ventral sheet member (2), and does not overlap with the dorsal sheet member (3). The elastic member (7) does not substantially overlap with the absorbent core (5). The ventral sheet member (2) has entering elastic members (7q) that are placed at both sides of the front constriction portion (5f) and enter more toward the inside in the width direction than the side edge upper end of the constriction portion (5c).Linvention concerne un article absorbant de type culotte (1) qui comprend un élément de feuille ventral (2), un élément de feuille dorsal (3) et un corps principal absorbant (4) qui comprend un noyau absorbant (5). Les deux parties de bord des deux éléments de feuille (2, 3) sont liées lune à lautre pour former une paire de parties de joint détanchéité latérales (S, S). Une partie de couture dentrejambe (C) est formée entre les deux éléments de feuille (2, 3). Le noyau absorbant (5) forme une partie de rétrécissement (5c) dans une partie centrale dans une direction longitudinale de celui-ci. Chacun des éléments de feuille ventral et dorsal (2, 3) comprend un élément élastique (7) qui est positionné dans un état étiré dans une direction de la largeur de celui-ci. La partie de rétrécissement (5c) a une partie de rétrécissement avant (5f) qui chevauche lélément de feuil
