It is intended to provide a composite sheet which is excellent in comfort to the skin face when used in an absorbent article such as a disposable diaper. A composite sheet (1) fabricated by bonding stretchable nonwoven fabric (2) to a non-stretchable sheet (3) using an adhesive (4). The stretchable nonwoven fabric (2) is bonded in the stretched state to the non-stretchable sheet. The composite sheet (1) has a contact area ratio of 65% or more and an air permeation resistance of 0.20 KPa·s/m or less. By satisfying these numerical requirements, the composite sheet shows excellent sweat absorption properties and air permeability when used as a constituting member of an absorbent article such as a disposable diaper.
