In a disposable diaper having a feces retaining pocket formed by body fluid absorbent panel sections overlapping each other in a crotch covering region so that the feces retaining pocket can be largely opened, a second panel section overlaps on a first panel section in the crotch covering region of the diaper to form the feces retaining pocket. The crotch covering region is provided along transversely opposite side edges thereof with elastically stretch- and contractable leak-barrier cuffs. Inner side edges of the respective leak-barrier cuffs are bonded to the second panel section in the vicinity of a rear end of the second panel section lying in the crotch covering region.