Based on the measured data of 47 groundwater monitoring wells in Jiangxi province collected in 2021,the present situation of groundwater quality was evaluated by using the method of single component and comprehensive evaluation,and the category and grade of water quality were determined,more than 50% of the samples were rated as class V or very poor.The main pollution factors were determined as iron,manganese,ammonia nitrogen and volatile phenol.Statistics show that 80% of the monitoring wells of the whole province have been polluted in different degrees,distributed in various regions of the province,and the corresponding control countermeasures are put forward.