Abstract: In response to the problems of low standardization and poor visualization caused by the traditional use of electronic spreadsheet management for railway construction progress in mountainous areas, this paper designed a railway construction progress management system based on GIS+BIM. The paper provided a unified data entry point for different construction units to fill in their progress reports through the design of a graphical progress data collection method, conducted statistical analysis of progress data, integrated engineering progress plan data, dynamically displays engineering progress and plan status, and drove the construction site BIM model to display three-dimensional progress in a three-dimensional scene. The application shows that the system can improve the uniformity of progress data and the intuitiveness of progress display, provide support for the digitalization of railway construction management.