The groundwater numerical simulation model of Jinan karst water system is established using Visual Modflow software. Combined with the present situation of groundwater exploitation in Jinan City and the urban water supply plan, we pursue an optimized groundwater exploitation schemes under 3 precipitation combinations of five normal years continuously, four withered years and one plentiful year, and 10 years(1982—1991)precipitation data by the groundwater numerical simulation model. The result shows that these three schemes can satisfy the goal of “keeping spring spurting and water supply ”, and the planned amount of water resources exploitation is reasonable, which plays a significant role in achieving the goal of“ keeping spring spurting and water supply ”.