Abstract: Abstract：During the process of groundwater circulation, hydrochemical characteristics are closely related to hydrodynamic conditions, and the dissolved chemical components will move with the movement of groundwater. Based on the water quality data of the coal seam floor in the penal 2401 area of Shunhe Coal Mine, we analyzed the hydrochemical characteristics in the study area using Piper diagram，Gibbs diagram，and ion ratio analysis method．The water release test verified that the analysis results were in good agreement with the actual situation. Therefore, it is feasible to judge the hydrodynamic conditions of the Taiyuan limestone aquifer using conventional groundwater chemical characteristics