PROBLEM TO BE SOLVED: To improve fitness to an adductor muscle prominence and a dent before and behind the prominence.SOLUTION: A pad-type disposable diaper 200 includes a front side part F2 and a rear side part B2 each extending to the front side and rear side of a crotch part C2. A main absorbent 30 is provided from the front side part F2 to the rear side part B2. The main absorbent 30 is provided thereon with a thigh fitting absorber 40 which is opposite to an area from a dent 101 of the front side of an adductor muscle prominence 100 to a dent 102 of the rear side of the adductor muscle prominence 100, and has a linear easily foldable part 41 along the adductor muscle prominence 100.