A disposable worn article diaper (1) includes: a central slit (45) formed in an absorber (40) such that the absorber (40) is curved to be convex toward an inward direction toward a wearer in a crotch region side curved portions (46L, 46R) formed in the absorber (40) along the lengthwise direction such that the absorber (40) is curved to be convex toward the outward direction. The disposable worn article diaper (1) includes a crossing elastic member (7A) crossing the absorber (40) in middle crotch regions and fixed to the absorber (40). The absorber (40) is contracted by the crossing elastic member (7A) toward a center of the absorber in the widthwise direction.