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.