A method comprising a step of manufacturing an elastic laminated body 12 by laminating two webs 10 and 11 while inserting an elastic member 4 in an extended state in a web length direction in between； a step of cutting the elastic laminated body 12 in a length direction A so that a concave portion 12a and a convex portion 12b appear alternately； a step of attaching a cover sheet 2 to bridge between the concave portion 12a and the convex portion 12b of cut first elastic laminated body 12A and second elastic laminated body 12B, respectively； a step of widening the first elastic laminated body 12A and the second elastic laminated body 12B to which the cover sheet 12 is attached； and a step of attaching an absorber 3 onto the cover sheet 12, lessens the occurrence of wrinkles and creases produced when webs are cut, and eliminates a problem attributed to the occurrence of wrinkles and arising when an absorber is attached.
