设计作为轨道交通工程其中一个环节，起着非常重要的作用。线路专业作为城市轨道交通工程设计前期专业，是整个地铁和轻轨设计中最重要的总体性专业。为提高城市轨道交通线路设计质量及工作效率，促进轨道交通又好又快发展，阐述线路专业在各阶段的工作内容和线路设计的工作方法。线路设计必须综合考虑各方面因素，深入仔细地研究线、站位方案，并积极与各市政部门、产权单位对接，逐步稳定线、站位方案，最终确定科学、合理、可行、经济并有利于运营的线路平、纵断面设计方案。

Design is a very important part of rail transit projects. As a professional design of urban rail transit project, the alignment profession is the most important overall profession in the design of Metro and light rail. In this paper, the working contents of alignment designing methods of alignment profession are discussed. The author suggests that many factors, i.e. further study on line location and station location, negotiation with related authorities and scheme decision, have to be considered.