A liquid absorbent structure 15 has a liquid permeable body side liner 36 and liquid absorbent layer 35, and the liquid absorbent layer 35 includes a liquid permeable first sheet 61, liquid permeable or liquid impermeable second sheet 62, and water-superabsorbent polymer particles 60 that are disposed between the first and second sheets 61, 62 and secured at least on the inner side of the first sheet 61 of the both sheets 61, 62. Between the body side liner 36 and first sheet 61, a plurality of elastics 37 extending in the longitudinal direction Y are provided in a stretched state at least in the center of the liquid absorbent layer 35. The body side liner 36 and first sheet 61 are joined via a plurality of joining portions 59 which extend in the longitudinal direction Y and are spaced apart at predetermined intervals in the lateral direction X. A plurality of ridges and grooves 26 extending in the lateral direction X are formed on the body side liner 36 and first sheet 61 by contracting the elastics 37, and the body fluid retaining portion 65 is defined between the first sheet 61 and second sheet 62.本發明之課題係具備有比較薄穿用感優,且可迅速吸收體液的吸液構造體之用後即棄式穿著用物品。解決手段,吸液構造體(15)具有透液性的身體側襯墊(36)與吸液層(35),吸液層(35)包含:透液性的第1薄片(61);透液性或不透液性的第2薄片(62);以及介設在第1及第2薄片(61、62)間,且被固定在兩薄片(61、62)中的至少第1薄片(61)的內面之吸水性聚合物粒子(60)。在身體側襯墊(36)與第1薄片(61)之間,至少在吸液層(35)的中央部朝縱向(Y)延伸的複數條的彈性體(37)以伸長狀態被配設。身體側襯墊(36)與第1薄片(61)朝縱向(Y)延伸,且在橫向(X)經由分離所給予尺寸的複數個接合部(59)被接合,藉由彈性體(37)收縮,在身體側襯墊(36)及第1薄片(61)形成朝橫向(X)延伸的複數個凹凸條(26),在第1薄片(61)與第2薄片(62)之間劃定體液保持部(65)。10‧‧‧用後即棄式穿著用物品(用後即棄式紙尿褲)21‧‧‧腰開口12‧‧‧後腰域11‧‧‧前腰域51‧‧‧覆蓋薄片17A‧‧‧前端部20‧‧‧側接合部52‧‧‧覆蓋薄片22‧‧‧腿開口17‧‧‧胯部薄片體37‧‧‧彈性體34‧‧‧基礎薄片36‧‧‧身體側襯墊13‧‧‧胯下域27a‧‧‧凸部27b‧‧‧凹部26‧‧‧凹凸條15‧‧‧吸液構造體
