Abstract: This paper selects the groundwater system in some key areas of Jianghan plain for the study on the optimization of the groundwater monitoring network based on the classification of groundwater flow system in Hubei Province.The adopted groundwater dynamic type mapping method provides geological basis for the arrangement of groundwater monitoring wells from the hydrogeological perspective,while the Kriging interpolation method quantitatively evaluates the interpolation accuracy of the water level so as to evaluate the density of the monitoring network. 77 monitoring wells attached to the National Groundwater Monitoring Project (natural resources) are in the study area.According to the monitoring requirements,the authors select 1.3 as the deviation of the critical interpolation error,thereby adding 30 new monitoring wells after the optimization.The optimized monitoring network in the research area can help obtain the groundwater dynamic information more scientifically and comprehensively.