Abstract: Since comprehensive management of excessive groundwater exploitation in the North China Plain was carried out by the Ministry of Water Resources in 2014,the groundwater level in the Baoding Plain has gradually risen.However, there remains a lack of systematic research on the chemical elements and quality changes of groundwater in the Baoding Plain.Using 217 sets of shallow groundwater samples collected from the Baoding Plain between 2014 and 2022,we first used Mathematical statistics, the Piper diagram, Gibbs diagram, and ion ratio method to analyze the hydrochemical characteristics, spatial distribution, and major controlling factors, and then adopt the Nemerow index method and fuzzy comprehensive evaluation method to evaluate the groundwater quality.The results showed that:(1) The anions in the groundwater were dominated by HCO-3,while the cations were dominated by Ca2+and Mg2+in the piedmont alluvial plain area(Zone I),and Ca2+and Na+in the alluvial plain area(Zone Ⅱ).From the western piedmont to the eastern plain, the hydrochemical types of groundwater gradually changed from HCO3-Ca·Mg type to HCO3-Na·Ca·Mg type or HCO3-Na·Mg type.(2) The concentrations of Na+,Mg2+,and HCO-3in the groundwater of the study area have remained relatively stable, while the concentrations of Ca2+,Cl-,SO42-and TDS fluctuated and decreased from 2014 to 2021,and then increased significantly from 2021 to 2022.The chemical composition of groundwater was mainly affected by rock weathering, dissolution and filtration, and alternate cation adsorption.(3) The water samples evaluated as Class Ⅲ and above by the Nemerow index method and the fuzzy comprehensive evaluation method accounted for 73.73% and 97.24%,respectively, indicating that the groundwater quality has been relatively stable over the years.The findings provide valuable scientific data for the sustainable utilization of groundwater resources in the Baoding Plain.