Abstract:On the basis of systematic analysis and study on Beichang ore block in Lanping Pb-Zn mine, with the theory of geostatistics and the Digitized Information System of Mine, the establishment of three-Dimensional Mathematic Model of the deposit, statistical analysis of samples, rock character model constructing, variability function computing, and ore value model construction had been completed in Lanping Pb-Zn mine. According to the mine mathematical model, a three-dimensional deposit model was also constructed for mining production dynamic management, which played an important role in resource optimization and rational development.