Abstract: Converter valve is the core equipment of DC power transmission。The aseaseismic performance can directly affect the safety of DC system.Application of FEA to analyse the modal analysis as well as the seismic response spectrum analysis. It is concluded that the strength of the valve tower obtained from the analyses meets the requirement of seismic design. The results show that the suspended valve tower structure is a kind of pendulum structure, which oscillates back and forth under the excitation of seismic wave, thus effectively reducing the impact of seismic action. The model and calculation analysis of the valve tower are carried out. The finite element results show that the valve tower meets the seismic requirementsThis study may provide a solution to seismic design of UHV converter valve tower structure