The groundwater numerical simulation is important effective for resolving hydrogeological questions as tool of forecast and evaluation for groundwater resources.A hydrogeology conceptual model and hydrology geo-science numerical simulation model are proposed by according to hydrogeology condition of Cheng'an in Handan.The groundwater system is numerically simulating calculated and forecasted by using the internationally standard software Visual Mudflow.The groundwater level monitoring results could be fit with the calculation better.The results show that this method of modeling is rational and effective.So the vary of the level of groundwater in 2004 is forecasted after reducing exploitation.The Results provide a scientific basis for the evaluation and utilization of groundwater.