In order to solve the problem of excessive transfer potential of the metal fence on Qingkeyang ground electrode site of the Hainan converter station in Qinghai, based on the measured soil resistivity of Qingkeyang ground electrode and the design of the pole ring, a simulation model is established to study the influence of the surface potential distribution of the pole site on the transfer potential of the metal fence under different working conditions. The research results show that the transfer potential of the metal fence is not only related to the current into the ground, but also closely related to the frozen soil. According to the research results, two different schemes of the transfer potential treatment plan are proposed, which may be referenced for design and construction in the subsequent project.