The invention belongs to the technical field of isotope production, and particularly relates to a high-voltage laid cable for electromagnetic separator. The high-voltage laid cable comprises multiple cables and wires which are arranged on the electromagnetic separator, and also comprises insulating pipes arranged on the peripheries of the cables and the wires. An existing high-voltage laid cable for the electromagnetic separator adopts a high-voltage comprehensive cable; phenomenon of cable partial discharge and the like are generated within two years of the existing high-voltage laid cable caused by the reasons of frequent ionic source light-striking of the electromagnetic separator, aging of the cable, and the like, so that the long-term continuous operation of the electromagnetic separator is severely affected. The high-voltage laid cable for the electromagnetic separator provided by the invention is adopted; the high-voltage laid cable is prepared by arranging multiple cables and wires in the insulating pipes which are made from an insulating material in a penetrating manner; the high-voltage laid cable has the characteristics of high strength, good insulation performance, long service life and the like; and after the high-voltage laid cable is mounted in a proper position through high-voltage laying in one time, the cable can be used for at least twenty years before halt production and replacement, so that fund is saved and economic benefit is increased.