Provided is an absorbent article that can prevent pulp fibers and a superabsorbent polymer (SAP) that constitute an absorbent body from leaking from openings, evening if a top sheet does not cover the side wall portions of the absorbent body at the openings. An absorbent article (1) comprises: a liquid-permeable top sheet (2) having openings (10)； a back sheet (3)； and an absorbent body (4) having openings (10). At the openings (10) of the top sheet (2) and the openings (10) of the absorbent body (4), the top sheet (2) is detached from the absorbent body (4), and the opening diameter (R2) of the openings (10) in the surface of the top sheet (2) on the clothing side is smaller than the opening diameter (R3) of the openings (10) in the surface of the absorbent article (4) on the skin side.
