Provided in the present invention is a board end connector for flexible connection with a PCB. Provided in the present invention is a board end connector, comprising: an insulating housing open at both ends; a locking nut used for mating with a first end of the insulating housing; and a cover used for mating with a second end of the insulating housing in a plugging manner; the cover body is configured to accommodate a first terminal having a welding tail end and, after mating, the cover and the second end of the insulating housing can slide axially and be limited within a predetermined space range.