Abstract: This article researched on the location situation of railway infrastructure management, proposed a kind of line reference model based on PostGIS to solve the problem of increased cost caused by using commercial database engine. The one-dimensional railway line data were managed and stored to implement the location management of railway linear assets spatial position information. The operation instance was given to verify the feasibility of the model application. The railway geographic information platform was used to upload application service, achieve the purpose of describing the map position of railway linear assets correctly and reducing the cost.