Background value of groundwater environment is an important basis of evaluating the quality，pollution degree and control effectiveness of groundwater. To construct early warning and assessing system for deep groundwater in Heze district and improve its management quality and efficiency，a study on background values of deep groundwater environment（＞350m）in Heze district was carried out by using mathematical statistic method on the basis of data from special investigation on drinking water source and routine monitoring conducted from 2013 to 2019. The results showed that the background values of 13 pollutants in the total 15 pollutants met the demand of classⅠto Ⅲof Groundwater Quality Standard（GB/T 14848-2017）and reached an excellent level，but F- and Na+ with the concentrations reaching 2.47mg/L and 208 mg/L，respectively were only in class Ⅴand class Ⅳ，indicating the poor quality. Correlation analysis showed that TDS had significantly positive correlations with SO42-，Cl- and total hardness. F- and Na+ had not only a significant positive correlation between each other，but also a significant positive correlation with pH value and a significant negative correlation with total hardness. Based on background values，the groundwater quality in the research area was evaluated as poor or extremely poor level by using F value evaluation method.