To simplify manufacturing steps of a printed circuit board, to suppress manufacturing cost of the printed circuit board and to connect wiring patterns without wire disconnection.

In the manufacturing steps of the printed circuit board, a copper surface plate 20 placed on a table 40 is heated by a heater 41 and is softened. A wire 70-1 is implanted to the softened copper surface plate 20 with downward movement of a clamper 60. The implanted wire 70-1 is cut away from a linear member 72-1 with a cutter 42. The copper surface plate 20 to which the linear member 72-1 is implanted is soaked into the plating liquid in a tank for electrolysis. The wiring patterns 22, 23 and the linear member 72-1 are electrically connected by conducting metal plating 24, 25 to the wiring patterns 22, 23 and the linear member 72-1.