The general geologic and hydrogeologic conditions of Sangshuping coal mine field are briefly introduced. The aquifers of the field are divided as followings: The Quaternary gravel and sand porous phreaetic aquifers (H1) ; The Permian sandstone fissured confined aquifers (H2); The Carboniferous sandstone and limestone confined aquifers (H3); And the Ordovician limestone confined aquifers (H4); On the basis of analysis of the chemical characterized of groundwater and mine water, it is pointed out that groundwater of the Ordovician limestone aquifer is the main recharge source of mine water. The mine water is characteristic of high hardness, mineralization and SO_4~(2-) content. A purifying method, electric percolation filtration, is proposed to process the minewater.