A pants-type disposable diaper comprising: a pants-shaped outer member having a front part a back part and a crotch part positioned between the front part and the back part and having a waist opening and a pair of leg openings formed by joining the front part and the back part and an absorbent main body disposed on an inner surface of the pants-shaped outer member at the crotch part and comprising a top sheet a back sheet and an absorbent core disposed between the top sheet and the back sheet wherein the pants- shaped outer member comprises an inner sheet and an outer sheet
