Abstract:With the rapid development of The Times and the progress of science and technology, electric power technology is in rapid progress, which is associated with more diverse, novel in the field of electric power and big load of business to support the stable operation of the power grid, the electric power communication network is put forward more requirements for existing and index, this article will focus on the status of electric power communication network based on SDH and how to use its OTN technology to optimize the existing electric power communication network mainly discusses two aspects.