A printed circuit board, a display panel and a wiring method are provided by embodiments of the disclosure. The printed circuit board includes: a first multichannel circuit connecting terminal; a second multichannel circuit connecting terminal; and a plurality of connecting wires connecting a plurality of second channel connecting pins of the second multichannel circuit connecting terminal with a part of a first channel connecting pins of the first multichannel circuit connecting terminal in one-to-one correspondence, the rest of the first channel connecting pins being spare, where at least one of the plurality of connecting wires has a first portion, which is bent to extend through a spare region, on the printed circuit board, between the spare first channel connecting pins and the second multichannel circuit connecting terminal.