Provided is a disposable body fluid absorbent wearing article that makes it possible to reduce the feeling of dampness. An inseam part of the disposable body fluid absorbent wearing article includes a fluid permeable sheet (2), a fluid impermeable sheet (3), and a fluid absorbent core material (4) disposed between the fluid permeable sheet (2) and the fluid impermeable sheet (3). A non-facing surface (2a) of the fluid permeable sheet (2), which is the opposite side to the surface facing the core material (4), is covered with a fluid permeable cover sheet (5). The cover sheet (5) includes a plurality of ridge parts (34) and a plurality of trough parts (36), which extend in parallel in forward and rearward directions. The cover sheet (5) further includes a middle region (41) that is attached to the non-facing surface (2a) along the width direction (B) of an inseam part (6), and lateral regions (42) that are disposed at the two outer sides of the middle region (41), respectively, and are not attached to the non-facing surface (2a). The lateral region (42) includes at least one trough part (36) and also one ridge part (34) that is disposed further outside in the width direction (B) than the trough part (36).本發明是一種,可減輕濕潤感的用後即棄式體液吸收性穿著用物品。本發明的解決手段,用後即棄式體液吸收性穿著用物品的胯下域包含:透液性薄片(2);不透液性薄片(3);及介設在該等兩薄片(2、3)間的液體吸收性的芯材(4)。在透液性薄片(2),與芯材(4)對向的面的相反側的非對向面(2a)是藉由透液性的被覆薄片(5)被覆蓋。被覆薄片(5)具有:往前後方向平行延伸的複數條的山部(34)與谷部(36)。被覆薄片(5)又具有:接合在胯下域(6)的寬方向(B)的非對向面(2a)的中央域(41)、與在中央域(41)的兩側各自的外側,對非對向面(2a)呈非接合狀態的側域(42)。側域(42)包含:至少一條的谷部(36)、與比谷部(36)更位於寬方向(B)的外側的至少一條的山部(34)。11‧‧‧兩側部分2‧‧‧透液性薄片(頂部薄片)4a‧‧‧側緣36‧‧‧谷部34‧‧‧山部42‧‧‧側域31‧‧‧表面22‧‧‧透液性薄片41‧‧‧中央域5‧‧‧被覆薄片2a‧‧‧非對向面2b‧‧‧對向面12‧‧‧腿圍彈性構件3‧‧‧不透液性薄片(背面薄片)4‧‧‧芯材32‧‧‧裏面21‧‧‧吸液性材料43‧‧‧熱熔接著劑
