Based on the analysis of hydrogeological conditions in Hehe of Shenmu County, Yulin, Shanxi, a numerical model was developed to simulate the allowable yield of seepage well in the exploitation conditions． When seepage wells are used to exploit water resources the inter-well interference is relatively smal1.Through the analysis of the simulation results of three different water-supplying projects (seepage well, galleries and radial well), a conclusion was made that the seepage well had many advantages compared to radial wells or galleries in the study area, such as the lager reasonable yield, the higher assuring rate and the much less influence on local hydrogeological conditions. The paper work out the allowable water-supply:in median water period, the allowable water-supply is 35200m3/d; and in the dry period, the allowable water-supply is 27400m3/d.