Influence Factors and Principle Analysis about Division of Passenger Special Line and Existing Railway

China has been developing and building the passenger special line in a more cost-effective manner, in order to relax the transporting amount and capacity of existed rail way, and promote passenger's service quality, etc.. The passenger special line has not become the network on the initial stage of building up, so the division question must be existed between the passenger special line and existed rail way. This paper analyses the main influence factor of passenger special line and existed railway, and has defined the principle that the two divide the work; Have confirmed the division principle of passenger special line and existed rail way from the macroscopic and microcosmic mainly. It is favorable to transportation organization, improve the society and economic benefits from the point of railway, and that the ones should meet the passengers' traveling demand and improving passengers' transport services quality level from the point of passengers..