Research conclusions: (1) Remote Control Communication Channel: When there are many controlled stations, especially they occupy many remote communication channels, it suggests to establish 2 Mbps self-heal loop net based on the control-platform unit with adopting 2 M E1 interface, installation of muter in control station and the controlled station and adopting IP searching address mode. If a standby muter is needed two 2 Mbps self-heal loop nets can be established. When there are a few control stations and they seldom occupy remote communication channel, the 64 k point-to-point mode of one-running and one-standby can be adopted with 64 k 4 line audio frequency board and synchronous/asynchronous RS232/RS422/RS485 interface. (2)Video Frequency Communication Channel: When there are many controlled stations, the 2 Mbps self-heal loop net can be established based on the control-platform unit. When there are a few controlled stations and only one or two controlled stations to add，the 2Mbps point to point mode can be adopted for purpose of saving money.(3)MSTP technology, which is now popular in communication field domestically, should be the first choice for construction of the special net for electrified railway. Application of this technology can integrate the controlled station's synthesis automation system, video inspect control system, MIS transmission net together and so on, and realize that one net offers and supports manifold function platform.