The satellite navigation complex electromagnetic environment Simulation laboratory builds a wireless test environment to simulate the visible constellation navigation signals and a variety of complex interferences that may be faced in an open environment, and simulates the three-dimensional, dynamic and continuous changes in the Angle between the interfered signals and satellite signals, so as to comprehensively test the dynamic and static performance of the navigation terminal and the anti-interference performance in a complex electromagnetic environment. The whole system needs to simulate a variety of navigation signal layout based on Beidou, the interference signal layout of relevant frequency bands, and the state control of the equipment under test, and finally complete the quantitative testing and evaluation of the dynamic and static performance and anti-interference ability of the equipment under test, and give the test and evaluation report. In addition, the system can also simulate the occlusion effect and multipath effect in the real environment, and combine the darkroom test with the real environment modeling and simulation to simulate the real environment more realistically.