In this paper, intelligent SQL Server 2005 database management system for the TIN system uses advanced digital elevation model, VC + + object-oriented modeling technology and multimedia development tool as a front. It automatically generates a standard terrain TIN Algorithm using Delaunay, Real-time, dynamic generation of various mining entities Through a powerful 3D OpenGL processing and display engine. To achieve three-dimensional visualization system of mine, reproduction under real three-dimensional scene, building visualization applications.