In order to realize the reasonable allocation and scientific management of maintenance resources of ballastless tracks，it is very important to deploy intelligent sensors at key positions of railway lines to monitor the key parameters of service state of ballastless tracks. Combined with the actual needs of high -speed railway maintenance, health monitoring scheme and BIM technology were visually integrated. The collision detection function of sensor layout, operation process optimization and operation process simulation were realized. The monitoring data were transmitted to the background database management system through the network and linked with the BIM models. The analysis and evaluation algorithm were embedded in BIM analysis model and database to realize real-time early warning of disease and timely find out the disease problems on site. Research shows that applying BIM technology to the intelligent monitoring project of ballastless tracks can effectively improve the installation accuracy and efficiency of monitoring equipment. It provides strong support for the preventive state maintenance of the lines and comprehensively improves the maintenance management level.