PROBLEM TO BE SOLVED: To make it easier for an absorbent article to follow hip groove shape change accompanying hip movement and prevent shinning leakage onto a rear side.SOLUTION: The absorbent 4 includes: on a rear side of a sanitary napkin 1, a central projection 20 projecting onto a skin facing surface side along the longer direction in the width direction center and both side projections 21, 21, apart from each other, projecting onto the skin facing surface side along the longer direction. Thus, when a user fitted with the napkin turns over in bed or the like, and the hip groove gets wider in width and shallower in depth, the central projection 20 and the both side projections 21 fit the hip groove as they are. When the user fitted with the napkin lies on her back or the like, and the hip groove gets narrower in width and deeper in depth, because of the foot pressure from both the sides in the width direction, the rear side of the absorbent 4 deforms so as to project onto the skin facing surface side, namely, deforms into an acute angle mountain shape as a whole with the central projection 20 as a peak and both side projections 21, 21 continuing both the sides of the peak, the napkin fitting deep into the hip groove.
