Novel printed circuit board

A novel printed circuit board is provided. A circuit schematic diagram is printed on the front side of the printed circuit board, and a voltage test hole and a waveform test ring are arranged at two ends of an electrical element on the front side of the printed circuit board. An electronic component is arranged on the back side of the printed circuit board, and a voltage test hole and a waveform test ring, connected at two ends of the electronic component via leads, are also arranged on the back side of the printed circuit board. The novel printed circuit board comprises a bottom-end dielectric layer (1), an inner line (2) connected with the bottom-end dielectric layer (1), a top-end dielectric layer (3) connected with the inner line (2), a screen-print circuit schematic diagram (4) connected with the top-end dielectric layer (3), a voltage test hole (5) connected to the screen-print circuit schematic diagram (4), the top-end dielectric layer (3), the inner line (2) and the bottom-end dielectric layer (1), a waveform test ring (6) connected to the voltage test hole (5), a connecting lead (7) connected to the waveform test ring (6), an electronic component (8) connected to the connecting lead (7), and four fixed holes (9) distributed at the periphery of the printed circuit board.