The invention discloses a multi-dimension electric power communication access network service modeling and demand analyzing method. The method comprises the following steps that firstly, a single-service information source model of an information dimension is built; secondly, a single-service transmission model of a communication dimension is built according to the information transmission and exchanging demands of different communication terminal devices, and a multi-service network model of the communication dimension is built based on the single-service analysis and the information communication network interaction characters; thirdly, a service environment model of an environment dimension is built according to the communication environments where different communication terminals and communication media are located and the building cost environment; fourthly, the electric power communication access network communication demand is analyzed according to the service models of the information dimension, the communication dimension and the environment dimension. The method is used at the beginning of network planning and designing, various communication services can be analyzed comprehensively, scientifically and effectively based on the dimensions, the services and the demands, a theory basis is provided for unified planning, unified designing and unified evaluating of the electric power communication access network, and the waste of fund and resources is greatly reduced.