Research conclusions :(1)Bi-block ballastless track is recommended for city regional railway after a comprehensive comparison between ballasted track and ballastless track and between different ballastless track types.(2 ) The structure design and construction method of the end beam at the end of track slab are optimized on basis of early research，design， construction and operation experience of bi-block ballastless track applied in high-speed railway，so as to effectively control the concrete crack of continuous track slabs for subgrade and tunnel sections. Thus，bi-block ballastless track with unit track slabs is recommended for subgrade，bridge and tunnel sections of city regional railway.(3)Bi-block ballastless track structure has good reliability，maintainability and economy. ( 4 ) The research results can be applied in the rail design of city regional railway.