The utility model discloses a voltage-withstanding magnetic latching relay. Relay housing, the relay comprises a relay shell, the relay shell is sleeved with a shielding cover, an inner cavity of theshielding cover is filled with a rubber shockproof cavity, clamping columns are welded to the inner side wall of the shielding cover, clamping grooves are formed in the two side walls of the relay shell, the relay shell is in buckled connection with the clamping columns on the inner side wall of the shielding cover through the clamping grooves, and a rubber baffle is installed at one end of the shielding cover. The relay is simple in structure, can effectively prevent the normal operation of the relay from being influenced by external electromagnetism by arranging the shielding cover, is convenient to assemble and disassemble, has good fireproof performance and heat dissipation performance, is convenient to operate, and is suitable for being widely popularized and used.