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.
