Abstract: Space ultraviolet irradiation may cause degradation of optical, electrical or mechanical properties of spacecraft materials. With ground simulation tests, it is difficult to simulate completely the space violet environment. So the accelerated testing method is usually used based on the effect equivalence. But many problems would arise, such as how to select suitable testing parameters, which should be carefully studied. The testing method and the standard for the ultraviolet irradiation test are first discussed, and then the calculation method of the ultraviolet radiant exposure, the choice of the simulation sources and the wavelength, the temperature, the acceleration factor, and the total radiant exposure are analyzed. At last, some further study topics are proposed.