Unit box of high and low temperature test device

The utility model discloses a unit box of a high and low temperature test device, which comprises a box body, the box body is provided with a test cavity with a front opening, and the opening end of the test cavity is provided with a box door connected with the box body through a hinge; a temperature control area is formed in the test cavity through an air duct sealing plate, a temperature adjusting assembly is arranged in the temperature control area, an air opening is formed in the lower portion of the temperature control area, and an up-down air adjusting window is arranged on the air opening. The multi-cavity high and low temperature test box is reasonable in design and ingenious in structure, the temperature adjusting assembly is reasonably designed, the temperature of the containing cavity can be changed, due to the fact that the multi-cavity high and low temperature test box is a unit box, the containing cavity is small in size and low in energy consumption during temperature control, the air opening i