A printed circuit board structure and a wiring method therefor are disclosed. The printed circuit board structure comprises a first wiring channel formed inside the printed circuit board for transmitting a circuit signal; a pin, connected to the first wiring channel for connecting a chip to the printed circuit board; the pin comprising an unused pin and a used pin, the used pin comprising a peripheral pin and an internal pin; wherein the printed circuit board further comprises a second wiring channel, the second wiring channel leads out the internal pin by means of covering at least a portion of the unused pin. By means of using a printed circuit board structure and a wiring method to configure pins of the printed circuit board, the number of printed circuit board layers is reduced, and the current carrying capacity is enhanced.