Abstract: By using the principal component analysis of the interrelationship among research variables and mutual correspondence analysis between variables and samples in the causes or spatial relation,the causes of contamination of groundwater and mineral water in the piedmont of the Panshan Mountain were analyzed in this paper.The contamination causes were also examined by using the SPSS.The research results show that the groundwater and mineral water have been contaminated in this area.The pollution in certain areas was induced by food factory,etc.The main pollutants are Cl-and NO3—N.The major pollution areas lay in Tayuan.The other pollution areas are situated from Xidafeta to Nanying.The contamination degree is related to the distance from the pollution source.The majority of the areas face the pollution of ammonia,nitrite and nitrate.Nitrogen fertilizer application inducing non-point source pollution is the main reason for groundwater contamination in the area.