Abstract:The background value of karst water environment is the main parameter to determine the degree of water pollution. Through comparative analysis and evaluation on quality and environmental and geological background of karst water in 2013 in Jinan city, quality pollution situation of karst groundwater has been reflected. The comprehensive assessment of ground water pollution is carried out according to previous evaluation. Although the evaluation results have certain limitations and incompleteness, it can basically reflect the overall situation of pollution degree of Jinan karst groundwater.