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 pin holes made in the foil circuit (21). The foilcircuit (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).