A disposable diaper (1) has: an absorbent main body (1A) having an absorber (40)； and an exterior body (1B) including an exterior body sheet which is disposed in an outward direction than the absorbent main body (1A). On a face of an outer direction's side of the disposable diaper, an opening unit (90) into which a finger can be inserted is formed. The exterior body (1B) has an overlap region (R3) which overlaps with an absorber, and the opening unit is provided in the overlap region.
