The necessity of mine water for recharging and the significance of recharge engineering a—bout Wu tongzhuang Coal Mine were discussed at the beginning of this paper, the technology and method of groundwater recharge were introduced, and then, the hydrogeology conditions of recharge in this mine were discussed.On the basis of above all.the technology study of mine water is re. charged to the aquifer in Ordovician limestone was carried out, the program of experimental engineer—ing about continuous recharge and timing recharge about redelivery were firmed.The reduction values of decreasing range about recharge water level and quantity are as evaluation standard on the effect of recharge, the reduction value of water level is 3.36 mm and the reduction value of water quantity is 0.224×10^-3m/m³ before and after recharging.The feasibility of mine water recharge was evaluated from the hydrogeology conditions after recharging, the affect of aquifer and water quality through dis—posing, and the program of recharge engineering at the end of paper.