本文针对既有线改造工程中的区间增设车站的纵向坡度可选取范围进行初步探讨，从列车停止平稳性、列车启动和制动、车站纵向排水、车站建筑及无障碍设计、车站站台门安装、车站设置配线等几个角度对纵向坡度的要求进行了初步分析，并提出一些结论：（1）必须对地铁列车的停放制动以及列车的启动和制动的技术性能进行必要和足够的校验和验证，它是决定在既有线区间增设车站的纵向坡度是否可适度放大的关键所在；（2）综合考虑地铁列车的停放制动以及列车启动和制动等技术性能，车站纵向坡度应该允许适度放大，但考虑车站建筑的设计以及乘客使用便利，这个幅度也不宜过大；（3）从道岔的养护和维修角度，建议允许设置道岔的纵向坡度不宜超过现有规范10‰的规定。

This paper preliminarily explores the selection range of longitudinal slope for adding stations in the existing line renovation project, and analyzes the requirements for longitudinal slope from several perspectives, such as train stopping smoothness, train starting and braking, station longitudinal drainage, station building and accessibility design, station platform door installation, and station wiring, And some conclusions are put forward: (1) It is necessary and sufficient to verify the technical performance of parking braking, starting and braking of subway trains, which is the key to determining whether the longitudinal slope of adding stations in existing line sections can be moderately enlarged; (2) Taking into account the parking and braking performance of subway trains, as well as the technical performance of train starting and braking, the longitudinal slope of the station should be allowed to be moderately enlarged. However, considering the design of the station building and the convenience of passenger use, this amplitude should not be too large; (3) From the perspective of maintenance and repair of switches, it is recommended that the longitudinal slope of switches should not exceed the existing regulations of 10 ‰.