[Problems] To prevent excrement, which is flown back on a diaper, from attaching to a gluteal region of a wearer while the diaper is not deteriorated in a capability of absorbing watery stool and the like[Means for Solving Problem] To a top sheet 30, comprising a widthwise central region 31 extending from front to back ends through a portion corresponding to an intergluteal cleft left- and right-side intermediate regions 32, 32 that are positioned on left and right sides of the widthwise central region and extend from front to back ends through portions corresponding to left and right gluteal regions, respectively and left- and right-side regions 33, 33 that extend from front to back ends along a left side of the left-side intermediate region and a right side of the right-side intermediate region, respectively, a large number of permeation holes H are formed at predetermined intervals in the widthwise central region 31, left-side region and right-side region 33, 33, respectively and no permeation hole H is formed in left- and right-side intermediate regions 32, 32.
