The utility model discloses a switch board of insulating radiation, which comprises a housin, the top outside fixed surface of casing is connected with the fan, be connected with insulating barrier on the front inner wall of casing, the ventilation pipe runs through in the upper and lower surface of insulating barrier left end, equal fixedly connected with wire casing on insulating barrier's the upper and lower side surface, the live wire hole is all seted up on insulating barrier both ends surface, the electric wire hole sets up in the outside at wire casing both ends, the upper portion joint of wire casing has wire casing ka gai, set up the convection current air outlet corresponding with the vent on the wall of casing right side. This switch board of insulating radiation carries out the layering through insulating barrier's effect with the switch board, and the wire casing through two sides design about the insulating barrier rationally carries out the layering wiring simultaneously, and can reduce dust and moisture in the switch board through the airstrainer and the air drying net of design on the fan, has increased the insulating radiation effect.