Backboard PCB design method for reducing vibration transmission of magnetic disk and PCB backboard

The invention discloses a backboard PCB design method for reducing vibration transmission of magnetic disks and a PCB backboard, and relates to the technical field of mechanical hard disk and backboard design, the PCB backboard is at least provided with two mechanical magnetic disks, a PCB island area is established for each mechanical magnetic disk installation area, and each magnetic disk is independently segmented; according to the PCB island area, the installation position of the mechanical magnetic disk on the PCB backboard is hollowed out in a concentric-square-shaped mode, namely, a groove is formed around the mechanical magnetic disk area, a wiring outlet is only reserved in one end of the mechanical magnetic disk area, and the mechanical magnetic disk area is connected with the PCB backboard only through the wiring outlet. The wiring outlet is provided with a long and narrow wiring aisle, the wiring aisle is formed by two parallel open grooves formed by continuous extension of the open grooves in the