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.本發明係關於提供一種即使表層薄片未包覆於開口部的吸收體之側壁部，亦可抑制構成吸收體之紙漿纖維或高吸收性聚合物(SAP)不會由開口部漏出之吸收性物品。本發明為含有具有開口部(10)的液透過性表層薄片(2)、背面薄片(3)與具有開口部(10)的吸收體(4)之吸收性物品(1)，對於表層薄片(2)的開口部(10)及吸收體(4)之開口部(10)，表層薄片(2)自吸收體(4)剝離，於表層薄片(2)之著衣側面中之開口部(10)的開口徑(R2)比於吸收體(4)之皮膚側面中之開口部(10)的開口徑(R3)還小。
