An absorbent article that can attain altering of the sensation of fitness thereof while maintaining a given capability of leakage prevention. The absorbent article is one comprising an absorbent article main body including at least a surface sheet part whose at least one area is permeable for liquid, disposed on one side in the direction of the thickness of the absorbent article and a liquid-retaining absorbent part disposed on the surface sheet part on the other side in the above direction of the thickness, and comprising, disposed on the other side in the direction of the thickness of the absorbent article main body, belt member (10) arranged so as to extend along the longitudinal direction (LD) of the absorbent article main body, the absorbent article shaped substantially longitudinally long. The belt member (10) has such a deformation region that at least portion thereof can be deformed so as to narrow in its width direction (WD). Further, the belt member (10) on its side of at least one end thereof in the longitudinal direction (LD) is provided with locking part (9f, 9r). The absorbent article main body and the belt member (10) in the deformation region are joined together at junction portions (8L, 8R) set apart from each other with a given spacing so as to have the center of the absorbent article main body in its width direction (WD) interposed therebetween.
