[en] The 3D geological modeling can visually display and express a large number of complex geological bodies. Which it is advantageous to show the internal shape characteristics of the geological body, and study on the metallogenic regularity. This paper taking Bayanwula uranium deposits as the research object, related geological materials in the area are Collected and carried on the information processing. With the help of large international mining software Surpac, constructed the geological database of Bayanwula uranium deposits, geological entity model, block model and grade model. On the basis of this, the principle and method of constructing 3D visualization model of geological bodies are summarized, and discusses the application of 3D Modeling Visualization in various aspects. (authors)