Groundwater recharge is an important way of water management strategies. Taking groundwater recharge test of Baoshan District of Shanghai as an example, the authors established the recharge test hydrogeological conceptual model. Then, the authors took TOUGHREACT for the numerical simulation platform to predict the quality of groundwater after recharging. The result shows that chemical composition of groundwater is mainly affected by mixing, cation exchange adsorption and dissolution of aquifer minerals and so on; water-rock interaction process of quartz, dolomite, feldspar, albite Stone and montmorillonite dissolves, calcite precipitation, illite and kaolinite precipitation is first dissolved, but the amount of mineral reaction and weak.