In order to strengthen the utilization, regulation and filing of information during the project construction progress, and to establish an open collaboration platform for all participants, this paper researches on the management system of digital documents and digital archives during a construction project based on BIM(Building Information Modeling).This paper analyses the importance and advantages of BIM-based management system on digital archives, and proposes and studies the system architecture, work collaboration, data approval platform and system standards of the management system.The application of BIM system is introduced from different aspects including material management, progress management, construction process management, site acceptance management and completion filing management. At last, some thoughts are put forward on the further application of IoT(Internet of Things)technology and indoor positioning technology in the system.The BIM management system of digital documents and archives not only effectively meets the requirements of cooperation among all parties, but also effectively improves the quality management level of the site.