The invention provides a radiator for a switch, and belongs to the technical field of communication equipment. The radiator comprises a plurality of radiator fans, a bracket fixed on a switch cabinetand an assembled fixing component, wherein the side, facing a switch mainboard, of the assembled fixing component is fixed on the bracket, the assembled fixing component is used for fixing the plurality of radiator fans, and the plurality of radiator fans are opposite to slots of a switch mainboard. The radiator for the switch can realize targeted radiation for the position of the mainboard slotswith larger radiation amount, and uniform radiation of the switch is realized.