The present invention addresses the problem of, in an absorbent article, maintaining at a certain level or lower the difference between the dry flexural rigidity and wet flexural rigidity [(dry flexural rigidity)-(wet flexural rigidity)] at a bonding part. To solve this problem, provided is a sanitary napkin (1) which comprises a top sheet (2), a back sheet (3), an absorbent body (4) that is interposed between the top sheet (2) and the back sheet (3) and a compressed part (5) that unites the top sheet (2) and the absorbent body (4) in the thickness direction, wherein: the absorbent body (4) contains a cellulose-based water absorbing fiber and a thermoplastic resin fiber, said thermoplastic resin fiber containing as a monomer component an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride or a mixture thereof and the difference between the dry Gurley stiffness and wet Gurley stiffness of the compressed part (5) is maintained at 2.5 mN/12.5 mm or lower.本發明之課題為,於吸收性物品中,將接合部分之乾燥時的彎曲剛性與濕潤時的彎曲剛性之差(乾燥時彎曲剛性-濕潤時彎曲剛性)維持在一定以下,為了解決此課題,於具備頂部薄片(2)、後部薄片(3)、設置於頂部薄片(2)及後部薄片(3)之間的吸收體(4)、與將頂部薄片(2)及吸收體(4)往厚度方向成一體化的壓搾部(5)之生理用衛生棉(1)中,使吸收體(4)含有包含將纖維素系吸水性纖維、不飽和羧酸、不飽和羧酸酐或此等之混合物作為單體成分之熱可塑性樹脂纖維,並將壓搾部(5)之乾燥時葛爾萊(GURLEY)剛軟度與濕潤時葛爾萊剛軟度之差設在2.5mN/12.5mm以下。1‧‧‧生理用衛生棉(吸收性物品)2‧‧‧頂部薄片(液體可透性層)3‧‧‧後部薄片(液體不可透性層)4‧‧‧吸收體5‧‧‧擠壓部(接合部)6‧‧‧本體部7a、7b‧‧‧翅翼部11a、11b‧‧‧封口部12a、12b‧‧‧封口部20‧‧‧排泄口接觸區域
