The power supply security in earthquake is determined by the anti-seismic capacity of power facilities. According to the characteristics of the Lushan earthquake and the investigation on the damage of power facilities， the damage reasons of power facilities， especially electrical equipments were analyzed， combined with the comparison of the acceleration response spectra of Lushan earthquake records， the anti-seismic design spectra of UHV electrical equipments and the design spectra of “Code for seismic design of electric power facilities”（GB 50260—96， GB 50260—2013）. Suggestions for improvement were put forward to improve the anti-seismic capacity of electrical equipments as soon as possible， in order to ensure the safety of power grid in earthquake.