Abstract:Based on Digital substation [ Digital substation ] information security risk, can be said to protect the information and data management and control issues. And the so-called digital substation, is to be able to enhance the safety operation of substation equipment level. But how to operate and maintain the information technology security of digital substation in Remote Mountain area is the active research and prevention topic of the whole electric power industry, the following for the new or reconstruction of the mountain digital operation and maintenance of the proposed countermeasures, for reference.