Electrical equipment of composite material has been applied in some substations, due to its characteristics of lighter quality and higher breaking strength. However, little research has been done in the seismic behavior of electrical equipment of composite material, especially for the experimental study of earthquake simulation shaking table. Based on the Sichuan-Tibet interconnection project, this paper summarized the researches on the seismic behavior of electrical equipment of composite material at home and abroad, and then studied its assessment method combined with the existing research on the seismic behavior of electrical equipment in China. Then, the input waveform, the peak acceleration and the judging principle of seismic ability also had been confirmed for the shaking table test of composite materials electric equipment. With using this method, 800   kV HV reactor bushing, 220  kV GIS external insulation bushing, 110   kV and 220   kV lightning arresters were tested respectively on earthquake simulation shaking table, and the dynamic characteristics and seismic response of the equipment were obtained. The test results show that the stresses on the tested electrical equipments of composite material all meet the seismic requirements of 0.4 g designed basic acceleration.