Abstract: The paper firstly established hydrogeological model for Chensilou Coal Mine research area, then used the Visual Modflow software to carry out numerical simulation in the research area of Taiyuan upper formation limestone aquifer, and the groundwater flow is consistent with the practical situation, hydrogeological parameters conform to actual condition, simulation results further illustrated that groundwater runoff conditions in Taiyuan Group limestone aquifer groundwater system was better. Drawdown funnel rapidly expanded, and maintained slow development trend, which showed that Taiyuan group limestone aquifer static reserves were smaller, permeability coefficient was larger, and had a certain lateral recharge.