A circuit board with a simple structure is manufactured. A circuit board 19 has thereon a foil circuit 21 provided on a synthetic resin plate 20 formed by injection molding, made of a copper foil, and having a pattern different for circuit board 19. Anchor pins 20a projecting upward are provided on the resin plate 20 and passed through pinholes made in the foil circuit 21. The foil circuit 21 are positioned and secured to the resin plate 20. In a required portion of the resin plate 20, a terminal insertion hole 20c is provided, and receiving terminal 22 is secured to the required portion of the terminal insertion hole 20c and connected to the foil circuit 21.