An absorbent article (200) includes an absorbent body (23) provided at a front and rear direction range including a crotch portion (C2), and a topsheet (22) that covers a top side of the absorbent body (23), wherein a slit (40) with a predetermined width is formed in the absorbent body (23) at least at the crotch portion (C2) to extend in a front and rear direction, and wherein the topsheet (22) includes a fall-in portion (30) that is fallen in the slit (40) of the absorbent body (23), and convex portions (31) are provided at least at a part of the fall-in portion (30).