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.本發明提供一種,使用於用後即棄式紙尿褲等的吸收性物品時,對肌膚面舒適性佳的複合薄片。此複合薄片1是使用接著劑4黏結伸縮性不織布2與非伸縮性薄片3所形成的薄片。伸縮性不織布2是被伸長的狀態下與非伸縮性薄片黏結。且,該複合薄片1的接觸面積率是65%以上,而透氣阻抗值是0.20KPa.s/m以下。藉由滿足該物性值,作為用後即棄式紙尿褲等的吸收性物品的構成構件來使用時,則吸汗性及透氣性佳。1‧‧‧複合薄片2‧‧‧伸縮性不織布3‧‧‧非伸縮性薄片4‧‧‧接著劑21‧‧‧稀疏區域22‧‧‧綿密區域MD‧‧‧製造流向