The structure of regional aquifer system in Suqian City is expressed by GMS according to the regional hydrogeological conditions,so that the hydrogeological conceptual model is more intuitionistic.Then,a corresponding model was established based on the hydrogeological conceptual model,and the variation of groundwater level in Suqian City was predicted by using Visual MODFLOW.The results indicate that there will be two big cones of depression in 2009.Finally,some reasonable suggestions for sustainable development with groundwater resources are given based on the predicted results.