Abstract: In order to realize the "one-stop" purchase of intermodal e-ticket of railway 12306 Internet ticketing and reservation system (12306 for short) and the "integration" travel of one ticket system, by referring to the application experience of domestic and foreign intermodal transportation modes, this paper put forward the technical scheme of constructing the railway journey planning platform of multiple transportation modes, designed railway, railway-airway, railway-highway and railway-waterway intermodal transport products that met the needs of railway journey planning business, expounded the journey planning algorithm of implementing multiple modes of transportation, and proposed the "fusion code" intelligent travel scheme of intermodal e-ticket based on railway e-ticket two-dimensional code technology, which provided reference for building 12306 into an intelligent platform for comprehensive transportation travel service.