Out of the idea of intelligent construction site, the Zhuhai Hengqin International Financial Centre Project conducts a series of research and development works on the collaborative platform, BIM and Internet of things. For the collaborative platform, the data transfer chain is linked among projects horizontally and in the company vertically, and the data island problem is emilated. For the BIM technology, advanced equipment like AR, VR, UAV, laser scanning, and etc. are used to assist in deepening design, and the construction simulation is applied to verify the scheme feasibility. The IoT platform is adopted for the automatic collecting, monitoring and analyzing of field data on site, which provides a solid data base for project management.