Abstract: In view of the problems existing in the preparation adjustment and progress control of the current railway construction organization, this paper focused on the preparation of construction organization plan, plan adjustment, tracking and early warning, and developd an intelligent preparation system for railway engineering construction organization. The system integrated the key elements such as unified railway construction project template, intelligent auxiliary decision-making scheme and visual expression method, and was applied in the Xi'an - Kunming high-speed railway. The results show that the system can implement the intelligent compilation and tracking early warning of railway construction organization, improve the management efficiency of on-site construction organization and assist in management decision-making.