Radiation-proof metal package housing

The invention discloses a radiation-proof metal package housing, and the housing comprises a tube seat, a lead, an insulator, and a cover plate. The tube seat comprises a case and a bottom plate, wherein the case is provided with a sealing-in hole, and the interior of the sealing-in hole is provided with the lead. One end of the lead is disposed outside the case, and the other end of the lead is disposed in the case. The insulator is disposed between the lead and the sealing-in hole. The cover plate is used for sealing the case. The outer sides of the case and the bottom plate are provided with a radiation-proof layer, and the outer side of the radiation-proof layer is provided with an insulating layer. The outer sides of the case and the bottom plate are provided with a shielding layer, and the outer side of the shielding layer is provided with the insulating layer, thereby solving a problem that an internal high-frequency circuit radiates outwards, and preventing external noise from interfering with the operation of the internal circuit.