A method of manufacturing a printed circuit board, including: preparing a double-sided substrate which comprises an insulating layer, a first copper layer formed on one side of the insulating layer and a second copper layer formed on the other side of the insulating layer; forming a via-hole through the second copper layer and the insulating layer; forming a plating layer on an inner wall of the via-hole; and forming, on the double-sided substrate, a via, a first circuit layer including a circuit pattern that is formed on a surface of the via having a minimum diameter and has a line width smaller than the minimum diameter of the via, and a second circuit layer including a lower land.