Abstract:Regarding data of water quality before 1980s and rescent years as the background, based on water quality determination information, by using “pollution index method”, regional comprehensive evaluation of groundwater has been carried out. It is showed that main pollution is inorganic matter, but the pollution of organic compounds maybe more harmful. The three nitrogen is the main inorganic pollution indexes of shallow groundwater, while the nitrate pollution is the most serious. The organic pollution indexes is 1,2—dichloroethane, 1,1,2—trichloroethane and carbon tetrachloride, the fracturekarst water is more easily polluted than pore water by organic compounds.