Printed circuit board structure, and wiring method therefor

A wiring method for a printed circuit board, comprising:

• planning a planning path connected to a preset level network according to the preset level network;
• configuring pins on the printed circuit board according to the planning path;
• configuring the pins as used pins and unused pins;
• configuring a preset level for the unused pins according to function and requirement of the chip;
• and
• forming a wiring channel according to distribution of the preset level network and the planning path;
• wherein the wiring channel covers at least a portion of the unused pins on the planning path, and is connected to the preset level network;
• wherein the wiring channel is disposed on a layer where the chip is located for leading out the unused pins to be connected to the preset level network;
• wherein the unused pins on the planning path are programmable, wherein a voltage of the preset level network connected thereto does not exceed a preset level configured for the unused pins, and wherein connection to the preset level network does not change functional/electrical characteristics of the chip.