The present invention aims to provide a disposable diaper improved so that the height of leak-barrier cuffs can be easily increased.A disposable diaper (1) is provided on the inner surface of a crotch region with a pair of barrier cuffs (20) opposed to each other about a longitudinal center line (C). Each of the barrier cuffs (20) includes inner and outer sheet strips (21, 22) in the form of sheet strips provided separately of each other. The first and second sheet strips (21, 22) include bottom side edges (28, 38) fixed to the inner surface of the diaper (1) and top side edges (29, 39) left free from the inner surface in the crotch region (8). The bottom side edge (28) of the first sheet strip (21) is spaced to one side of the bottom side edge (38) of the second sheet strip (22) toward the center line (C-C). The first and second sheet strips (21, 22) are collapsed onto the inner surface of the diaper and overlap with each other in such a collapsed state. The first and second sheet strips (21, 22) are locally bonded to each other in a part of the overlapping area of these sheet strips (21, 22) . One of the first and second sheet strips has its top side edge placed to one side of the top side edge of the other sheet strip toward the center line (C-C) and provided with an elastic member (42).
