The python river plain area is influenced by the topography and geomorphology, which is conducive to the enrichment of groundwater and is a prosperous area for the development of industrial and agricultural production in Jiyuan. The collection of relevant samples was carried out in 03, 2018, on the basis of which the groundwater chemical characteristics of the python river plain area were analyzed by using mathematical statistics, Piper diagram, Gibbs diagram, and ion scale analysis. The results show that: (1) the main water chemistry types in the study area are Ca.Mg‐HCO_3.SO_4 and Ca.Mg‐HCO_3.Cl; (2) the groundwater in the study area is mainly controlled by rock weathering, and the main ions in the water body come from the dissolution of calcite and dolomite‐dominated carbonate rocks; (3) sulfuric acid and carbonic acid jointly participate in the dissolution process of carbonate rocks.