Abstract: The wide application of the transmitter-receiver sharing technology in the satellite communication antenna brings about the inevitable passive intermodulation (PIM). For the satellite antenna operating in high and low temperature environment in the space, whose PIM performance is sensitive to the temperature, and the ground tests are needed to verify the antenna’s PIM performance. Based on this requirement, a new type of wave-transparent test box is designed, with which the antenna can be tested for its PIM performance at high and low temperatures. The box is designed mainly in terms of the dielectric material selection, the structural pressure resistance, and the thermal insulation performance. The test verification shows that the box can stand the temperature range of -150 ℃ to 150 ℃, with a safety margin of 0.648 of the PMI board of the box structure, and the total insertion loss is less than 1 dB. The PIM performance of the box body is basically stable and better than -150 dBm. and it can be widely used in the ground validation test for antennas’ PIM performance.