首先，通过梳理出行即服务（Mobility as a Service, MaaS）的发展阶段及特征，分析我国当前MaaS发展情况，确定了MaaS当前所处阶段，以及“为旅客提供‘干线运输+城市交通’的全链条、一体化的出行服务”的阶段性目标与“共享、整合、一体化、定制化”的特征要求。然后，对比了铁路联运服务发展现状与现阶段特征要求，认为当前铁路联运服务在信息互通、产品供给、服务衔接等方面存在问题和差距，特别是运营数据信息不共享，导致全过程动态信息服务缺失，以及针对非正常状态下联运客票退改签保障措施的缺失，导致旅客权益无法得到有效保障。最后，针对性提出了MaaS理念下以铁路为主导的旅客联程运输服务体系，并对信息平台建设模式、票务数据共享方式、票制改革、安检流程优化、行李运输模式等重点方面，逐一提出实施路径，以及国内外相关领域参考案例。

Firstly, by analyzing the development stage and the stage characteristics of Mobility as a Service (MaaS), and the current development situation of MaaS in China, it has determined the current stage of MaaS in China. As well as the development stage goal of China′s current MaaS service which is "providing passengers with ′trunk transportation + urban transportation′ full chain, integrated travel service", and the characteristics of "sharing, consolidation, integration, customization". Secondly, compared with the development status of railway-led passenger intermodal transport and the characteristic requirements at the present stage, there are gaps and problems in information sharing, product supply and service connection, especially the lack of operational data and information sharing, resulting in the lack of dynamic information services throughout the whole process, and the lack of supporting measures for ticket refund under abnormal conditions, which cannot effectively protect the rights and interests of passengers. Lastly, the paper proposed a railway-led passenger intermodal transport service system under the MaaS concept and put forward the implementation path in key aspects such as the construction mode of information platform, sharing mode of ticketing data, ticketing reform, optimization of security inspection process, baggage transport mode, and domestic and international reference cases.