By reducing the internal pressure of the chamber through a vacuum system, combined with a temperature control system, the equipment can simulate the combined low-pressure and low-temperature (or high-temperature) environment of plateau regions, effectively reproducing atmospheric conditions at different altitudes. Using a vacuum pump unit and a pressure regulation system, the chamber pressure is lowered to a level corresponding to the test altitude. Coupled with the temperature control module, this allows for synchronized variations in temperature and pressure, enabling the simulation of more complex environmental conditions.