Abstract: The article describes the design ideas of the platform system architecture, intrduces the specific content and features of COM multilayer architecture, and elaborates design of system core components and system functional components.Virtual mine visualization platform based on VS2010 + Direct3D can not only quickly build virtual environment of mine up, but also has a virtual patrol, device management, monitoring and control, personnel location and geological information and other functions. Combined 3D visualization and virtual reality technology and a series of mine production actual work together, the platform system will greatly improve technology level of "Digital Mine".