The present disclosure relates to the field of circuits, and provides a printed circuit board (PCB) and an electronic device. The PCB includes a substrate and a wiring layer arranged at the substrate. The wiring layer includes a digital region and an analog region, and a gap region is defined between the digital region and the analog region. The substrate is provided with a hole in the gap region, and the digital region and the analog region of the wiring layer are connected through a magnetic bead.