A method including: a step of carrying a continuous web; a cut-off step of cutting the continuous web into individual worn articles 1; a first folding step of folding the diaper body 2 so that a skin-contact surface of a front portion 20 and a skin-contact surface of a back portion 21 lie one each other; and a folding step of folding a pair of side panels 3, wherein in the folding step, the pair of side panels 3 are folded as second pads 32, which rotate in a folding direction in which the side panels 3 are folded with respect to a first pad 31, rotate in the folding direction, while the diaper body 2 is held on the first pad 31 and while the side panels 3 are held by the second pads 32.