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Railway route selection design is the overall plan of railway construction in the work leading a tremendous effect on the construction of the railway and the social factors, economic characteristics, technological conditions and the ever-changing natural conditions is bound to produce a variety of line program.In this paper, starting from the evaluation of the selection of indicators, the existing research results, based on environmental assessment and social assessment indicators were more in-depth research.Second, in determining the evaluation index weights, the use of maximum entropy theory, the evaluation index weights of the expert opinion that contains both a subjective element, but also reflects the weight of objectivity.Finally, in a comprehensive evaluation, the use of multi-objective decision-making method Vague sets, implements passenger line alignments, decision-making, and take advantage of this method Cheng Du to Chong Qing PDL conduct an empirical analysis show that the method is practical, systematic and flexibility.
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