3D-ore body modeling is one of the most useful methods used by mining geologists and engineers to produce 3D-models of an ore body. In this research, 3D-MINE package is used for： 3D-topographic modeling, 3D-solid ore body modeling, 3D block modeling of ore grade and production of grade-tonnage curves. Information used in the ore body modeling and ore reserve estimation are those collected from early exploration diamond drill holes produced by Guangxi autonomous regional geological exploration team. Only 23 diamond drill holes are used in the modeling of the entire deposit with a total drilling depth of 7135.72 meters （m）. The ore body in the research area lies almost horizontal but inclined at lower angles at some regions. It has a discontinuous distribution within the mine area. This may be due to faulting and changes of thickness in lithology. 3D-block modeling is carried out for estimating the overall （global） ore reserve of the mine. The weighting inverse distance with ellipsoidal search.area method was used in the ore grade estimation process. Block modeling of the global reserve of the mine is done by assigning a constant specific gravity of 2.7. A eut-offgrade of Zn〉lppm and Pb〉0.2ppm is assigned in the grade estimation process for exploration purpose. The ore body is estimated to have a total volume of 2401875 cubic meters with a total reserve tonnage of 6485062.61 tons. The estimated total average Zn andPb grades are 4.45 （ppm） and 1.88 （ppm） respectively. The estimated total reserve of Zn is 28.88 million tons and Pb is 12.21 million tons. A topographic digital terrain model （DTM） of the mine site showed an elevation range of 250-395m.
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