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