Research methods: In accordance with the requirements of operational management and in combination with the technology development of making up network of telecommunication transmission system，the comparison and research were made for some programs from the areas of the principle and technology of making up network and composition of telecommunication transmission system for urban mass transit.
Research results: The choices in technology and system composition of telecommunication transmission system for urban mass transit were presented under the different operational management mode.
Research Conclusions: The following suggestions were put forward: constructing network in different levels，choices of transmission system in technology ， level composition of transmission system，plan and construction of control center of telecommunication transmission system，management of transmission network and synchronously construction of clock，etc.
2007, Vol. 24 
