Abstract: The short-and long-term goals of constructing the train diagram-making system of railways in China are put forward. Ageneral structure of this system based on the two levels of the Ministry of Railway and railway bureaus is proposed, and its functions and implementation approach are discussed. An idea of train diagram-making is advanced. That is, the train diagramdatabase of railways in Chinamaybe setup on the basis of railway bureaus’and sub-bureaus’databases, sections should be used as the basic description unit in the design of databases, and single and double track railways oughtto be considered atthe same time in train diagrammaking. In addition, the key techniques of the system design such as the organization of data, the design of data structure, the solution of diagram-making algorithm and the design of man-machine interaction functions are discussed.