To provide a pad capable of deforming inward the entire region in the front-back direction and the width direction of an absorber so as to be closely attached to the inner surface of a disposable diaper and the pad being capable of enhancing the fitting performance to a wearer.An absorber (12) includes a front body portion (12C), a back body portion (12E), and a narrowing portion (12D), whose width dimension is reduced, provided between the front body portion and the back body portion. A first groove (21) extending in the front-back direction is formed in a central portion in the width direction of the absorber. A third groove (23) extending in the width direction is formed in a central portion in the front-back direction of the narrowing portion. A second groove (22) extending in the width direction is formed in a front side portion in the front-back direction of the narrowing portion. A fourth groove (24) extending in the width direction is formed in a back side portion in the front-back direction of the narrowing portion.
