Provided are a wearing article production method and apparatus capable of accurately folding a main body in half while inhibiting damage of the main body, and maintaining a folded position of the main body after the half-folding operation, and a wearing article produced thereby. The method comprises the steps of: preparing a first suction-holding section (34a) and a second suction-holding section (34b); positioning the first suction-holding section and the second suction-holding section (34b) in such a manner that respective surfaces of the first suction-holding section (34a) and the second suction-holding section (34b) are aligned side-by-side while facing the same side; suction-holding a forward surface of a main body (2) of an developed module (1Z) by the first suction-holding section (34a), and suction-holding a rearward surface of the main body (2) of the developed module (1Z) by the second suction-holding section (34b); closing the first suction-holding section (34a) and the second suction-holding section (34b) to fold the main body (2) in half; and releasably joining superimposed portions of the developed module (1Z) half-folded by the half-folding step.