Provided is a composite stretchable member with a smaller thickness and more uniform pleats. The composite stretchable member is stretchable in a first direction (D1) and is provided with a first nonwoven fabric sheet part (2A) and a second nonwoven fabric sheet part (2B) which are superposed on each other, and a plurality of elastic members (3) which are arranged between the first nonwoven fabric sheet part (2A) and the second nonwoven fabric sheet part (2B). The elastic members (3) extend in the first direction (D1) while being separated from each other in a second direction (D2) perpendicular to the first direction (D1), and the first nonwoven fabric sheet part (2A) and the second nonwoven fabric sheet part (2B) are joined with each other by an adhesive which is applied to the elastic members (3).