Abstract: This paper studied the quick 3D modeling method of large complex geological mining engineering under the true 3D ground and underground environment，the realization method of scene wandering and simulation system，and proposed a set of effective true three-dimensional digital integrated solution for large-scale mine.Taking Gejiu Tin Mine of Yunnan province as an example，this paper studied the total design and the technical solutions of specific implementation of digital mine simulation information system，realized the true 3D ground and underground integration，the unified management and analysis of two-dimensional geological data and 3D geological model，phased integration of the mining segment of “partition type” digital ore fields.Also，it can carry on the interactive operation through the network，is a one-stop comprehensive service platform of multi-purpose，multi-level and multi-stage with combination of production，learn and research.These are of important significance to development construction，resources exploration and evaluation，comprehensive informatization management of a mine and mine-related knowledge popularization to the public.

Key words: 3D modeling, Virtual reality, Digital mine, Simulation system