A disposable diaper includes a waist opening and a pair of leg openings with a composite stretchable member. The composite stretchable member includes first and second nonwoven fabric sheet parts and elastic members arranged therebetween. Each of the first and second nonwoven fabric sheet parts is provided with a plurality of convex-concave regions including convex and concave parts. At least one non-shaped region separates the convex-concave regions from each other in the longitudinal direction. The first and second nonwoven fabric sheet parts are overlaid so that the convex-concave regions of the first nonwoven fabric sheet part and the second nonwoven fabric sheet part adjoin each other and the non-shaped regions of the first nonwoven fabric sheet part and the second nonwoven fabric sheet part are separated from each other and are joined with each other by an adhesive applied to the elastic members.
