PROBLEM TO BE SOLVED: To provide an absorbent article being less prone to leak humor and preventing underwear and outerwear from getting dirty.SOLUTION: Both sides of a body part include double flaps comprising lower-layer flaps F1 relatively located at a non-skin side, and an upper-layer flaps F2 relatively located at a skin side respectively. Each lower-layer flap F1 includes at least a winglike flap W that is fixed to spool up a crotch part of underwear when being worn. Each upper-layer flap F2 includes at least a leg opening flap X disposed at an area overlapped with the winglike flap W, to cover a groin part when being worn. The side end of the leg opening flap X is located outward with respect to the side end of the winglike flap W and is divided into a plurality of portions longitudinally by cut lines 9 formed along the substantially width direction of a sanitary napkin 1.