In order to enhance the enterprise management ability and to improve management efficiency, a BIM-based material management system is developed by Beijing Mining Construction Group, combining the existing project management system with the BIM technology. The system covers the phrases of quantity calculation, requirements management, procurement planning and on-site materials management. Through the informatization construction, the management efficiency and management ability are both enhanced at the level of the projects and the company, which completes the transformation from rough management to meticulous management. This paper mainly introduces the key functions and structure of the system, which hopefully can be beneficial for other construction enterprises.