Problem to be solved: to improve the texture of the liquid permeable surface sheet and to absorb the body fluid quickly and to eliminate the sticking of the surface.Solution: the permeable surface sheet 3 is formed into an irregularity shape in which a convex portion 10 extending in the longitudinal direction of the sanitary napkin 1 and a recess 11 are alternately arranged in the width direction of the sanitary napkin 1, and a rectangular opening 12 is formed on the side surface of the convex part It has been completed.A second sheet 6 is disposed on the non skin side of the liquid permeable surface sheet 3, and the liquid permeable surface sheet 3 is separated from the second sheet 6 in the convex part 10, and a foldable part having a substantially. Omega. Character in the cross-section is formed, and the liquid permeable surface sea in the concave part The third sheet 6 is bonded to the third sheet 6.Diagram【課題】透液性表面シートの肌触りを良好にするとともに、体液を素早く吸収し、かつ表面のべたつきをなくす。【解決手段】透液性表面シート3は、生理用ナプキン1の長手方向に延びる凸部10と凹部11とが生理用ナプキン1の幅方向に交互に複数配置された凹凸形状に形成され、前記凸部10の側面に、矩形状の開孔12が形成されている。透液性表面シート3の非肌側にセカンドシート6が配設され、前記凸部10において透液性表面シート3がセカンドシート6から離間して断面略Ω字状の襞状部が形成されるとともに、前記凹部11において透液性表面シート3とセカンドシート6とが接合されている。【選択図】図3