Research conclusions : To the scheme for leading the Chengdu-Guiyang Passenger Dedicated Line，the following points should be paid attention to:(1)The analysis and research should be made and done in accordance with the thoughts of "asking the questions，analyzing the problem and solving the problems". According to the principle of"straightening the passage，deepening the passenger traffic into the city proper and separating the passenger and freight traffic"，the new railway should be led into the existing station to make full use of the existing railway lines and relative facilities and facilitate the management.(2)Furthermore，on consideration of the new channel and the corresponding site，the to the point of line selection method should be used for determining the main station sites and then determining the appropriate railway line direction.(3)The schemes should be compared in attraction of passenger flow，convergence of city planning and project investment to determine the general layout scheme. ( 4 ) This research results can be used for determining the general scheme for leading the new railway line into the city or transportation terminal.