The utility model discloses a magnetic latching relay that security performance is high, which comprises a housin, shells inner wall is connected with screw sleeve through the buckle, screw sleeve inner wall swivelling joint has spiral shell rasp bar, spiral shell rasp bar one end can be dismantled and be connected with the layer board, layer board surface adhesion has the alumina ceramics gasket,the alumina ceramics gasket surface adhesion has the sucking disc, casing inner chamber bottom sliding connection has drying agent box, casing top fixedly connected with stand, the stand surface hasbranch no. One through bolted connection, no. One branch one end swing joint has branch no. Two, the shells inner wall adhesion has the rock wool board. The utility model discloses an adhesion of layer board surface has the alumina ceramics gasket, has good insulating properties, can avoid electrocuteeing, improves the safety in utilization of relay, has the rock wool board through the shells inner wall adhesion, has good fire behaviour, can avoid the relay to produce autoignition phenomenon.