///Large amounts of hydrogeologic survey data show that the Kanshang iron mine is divided into 2 parts, under complicated hydrogeologic conditions with 4 aquifers and 2 aquitards. With the methods of big-well and numerical simulation, yield of well is predicted. The result is that the normal yield in the north part is (3 067) m3/d, (23 400) m3/d in the south part.