Abstract: In order to solve the problems of heavy workload and difficult integration management of railway route selection cases summary, based on Node.js framework and MongoDB database, this paper integrated railway route selection cases, line design technical standards and geographic information data, and carried out the development practice of railway route selection case system, constructed a railway route selection case base for route selection designers, a case application analysis cloud platform and a case information management system. The system functions include uploading and management, query and download, application and analysis, and case data visualization of railway route selection cases, etc.