As the foundation of buildings, foundation engineering directly affects the safety and quality of buildings. Combined with the foundation engineering characteristics and the actual construction situation of the knowledge tower project of plot jlxc-f1-1 of Zhongxin Guangzhou Knowledge City, this paper visualizes the geological survey data in three dimensions and optimizes the pile foundation construction process in integration with site planning, construction process simulation and other methods through the combination of BIM and related technologies. with accelerating the construction progress, this paper uses "BIM +" technology to form various new processes and technologies, which solves the difficult problems of actual construction and improves its construction quality. Meanwhile, the work above saves on-site construction cost and strengthens the management of the construction site. Duration benefit and cost benefit in construction are obtained for the practical engineering application, which can provide corresponding reference for similar projects in the future.