High and low temperature box for frequency source production of electronic system

The high and low temperature box for producing the frequency source of the electronic system comprises a box body, a cabinet door, a refrigerator, a heater and a heat insulation assembly, the cabinet door capable of being opened and closed is arranged on the front face of the box body, the refrigerator and the heater are arranged at the bottom of the box body, and the heat insulation assembly for separating the box body is arranged in the middle of the box body. And a heat insulation layer, a silver plating layer and a plastic layer which are matched with each other are sequentially arranged on the inner side of the box body from outside to inside. The heat insulation layer in the partition plate has good heat insulation capacity, the heat insulation capacity of the partition plate can be improved, the silver plating layer can isolate radiation, heat transfer is prevented from the angle of radiation, the heat insulation capacity of the partition plate is further improved, the interior of the heat insulation l