PROBLEM TO BE SOLVED: To enable the skin surface side of a diaper to easily fit on a body when the diaper is worn and to make the degree to which fastening tapes are fastened around a belly satisfactory.SOLUTION: A disposable diaper includes: at least an absorber 4 also fastening tapes 10 attached to both sides of a rear so as to project sideways and a front target tape 11 for fastening the fastening tapes 10 attached to the abdominal-side external surface. An elastic stretchable member 12 is disposed on the widthways central part of the front target tape 11 along the widthways direction. Thereby, the front target tape is formed so as to elastically stretch in the widthways direction. Additionally, this elastically stretchable section is disposed so as to overlap the absorber 4. Thus, the widthways central portion of the front body is deformed in a projecting shape on the skin surface side and easily fits on the belly of a wearer. While the fastening tapes 10 are fastened, the tape 11 is appropriately extended or shortened around the belly by virtue of the elastically stretching effect of the elastically stretchable member 12, thus achieving an appropriate degree to which the tape 11 is fastened around the belly.
