Abstract: The depth of confined aquifer in Shanghai is very deep. The waterproof curtain in deep foundation pit was hard to the bottom of confined aquifer, and the complete barrier to groundwater levels can't be done, then the environment must be impacted. According to the recharge experiment in the deep foundation pit of the shengda international financial center of Shanghai, the result that the artificial recharge has some effect for controlling the level of groundwater was achieved. In the end, according to the numerical simulation the change of groundwater level was gotten under different recharge conditions.