Abstract: Abstract：In order to identify chemical characteristics of groundwater in Hunchun Basin, the authors collected groundwater samples for test and then used the Aquchm, SPSS and MapGis to analyze the hydrochemical characteristics and correlation of groundwater in Hunchun Basin. The results show that TFe, Mn2+ and NO3- exceed the standards seriously in groundwater of Hunchun Basin, and the groundwater quality of Henan district is on the whole poorer than that of Hebei district. The hydrochemical types of groundwater in Hunchun Basin are dominated by HCO3?CaMg type, with ClHCO2, ClSO4HCO3, and SO4ClHCO3 types in some areas. The correlation of TDS, Ca2+, Cl-, Mg2+, SO42- and NO3- (credited with N) in groundwater is high. The main process of the groundwater chemical evolution is the leaching effect.