An absorbent article with a composite sheet that has multiple ruffles on the internal surface side facing the wearer side so as to agree with the wearers skin and excel in fitness. The composite sheet is composite sheet (17) comprising stretch nonwoven fabric (172) whose stretching direction (WD) lies in at least one direction nonstretch nonwoven fabric (171) junction parts (173) where the stretch nonwoven fabric (172) and the nonstretch nonwoven fabric (171) are intermittently joined together along the stretching direction and multiple ruffles (174) provided in nonjunction parts lying between junction parts (173) along the direction intersecting with the stretching direction by slacking of the nonstretch nonwoven fabric (171) in the nonelongated condition of the stretch nonwoven fabric (172), wherein when in the nonelongated condition the ruffles (174) are collectively bent in one direction agreeing with the stretching direction, foldback distal end portions of the ruffles (174) do not reach the ruffles adjacent thereto.
