Disclosed is a remote restart apparatus for a communication system of a transformer substation. The remote restart apparatus is characterized by comprising a signal emitter, an intelligent control system and a relay KM, wherein a signal receiver is embedded in the intelligent control system; and the intelligent control system controls the state of the normally-closed contact of the relay KM so as to realize the power off-power transmission process of the communication system of the transformer substation. The remote restart apparatus for the communication system of the transformer substation is creative in conception, simple in structure, high in practicability, and capable of effectively solving the problem of dead halt of the communication system of the 35kV unattended transformer substation, greatly shortening the dead-halt failure clearance period of the communication system, and improving the safety and reliability of the operation of the equipment; and meanwhile, the one-to-many operating mode brings convenience to the operation and maintenance staff.