The problem to be solved by the present invention is to provide an absorbent article in which a reduction in liquid absorbency caused by the hydrophobicity of thermoplastic resin fiber is prevented through the use of thermoplastic resin fiber that includes unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, or a mixture of these as a monomer component. The present invention solves this problem by providing a sanitary napkin (1A) provided with a top sheet (2), a back sheet (3), and an absorbent body (4A) disposed between the top sheet (2) and the back sheet (3). The absorbent body (4A) has an absorbent material layer (41) that contains a cellulose-based hydrophilic fiber and a thermoplastic resin fiber that includes unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, or a mixture of these as a monomer component in a mass ratio of 90:10 to 50:50. The top sheet (2) has an integrated section (5A) that is heat-treated together with the absorbent material layer (41) so as to be integrated with the absorbent material layer (41).以提供藉由利用含有不飽和羧酸、不飽和羧酸酐或彼等之混合物作為單體成分的熱可塑性樹脂纖維,防止熱可塑性樹脂纖維的疏水性造成的液體吸收性的降低的吸收性物品為課題,為了解決該課題,本發明提供具備頂部薄片(2)、背部薄片(3)、與頂部薄片(2)及背部薄片(3)間所設置的吸收體(4A)的生理用衛生棉(1A),其中吸收體(4A)具有以質量比計含有90:10~50:50的纖維素系吸水性纖維、與含有不飽和羧酸、不飽和羧酸酐或彼等之混合物作為單體成分的熱可塑性樹脂纖維之吸收性材料層(41),頂部薄片(2)具有與吸收性材料層(41)一起被加熱處理而與吸收性材料層(41)一體化的一體化部(5A)的生理用衛生棉(1A)。
