Abstract:According to the groundwater environment monitoring report of Jiangxi province, iron and manganese in groundwater exceed the standard in some areas of Jiangxi province, which poses a potential threat to the surrounding ecological environment. Therefore, the spatial distribution characteristics of high-value iron and manganese and the health risks generated in groundwater need to be studied urgently. Based on the test results of 23 groups of groundwater samples in a typical iron and manganese outlier area in Jiangxi province, the distribution characteristics of iron and manganese in groundwater and their correlation with water quality parameters were studied, and the groundwater quality and health risks were evaluated. The results show that the pH value of groundwater in the study area is 5.67—6.48. The groundwater chemistry type is dominated by HCO3-Na, small amount of HCO3-Ca?Mg type and SO4?Cl-Na type water; The concentration of iron in groundwater in the study area is 0—15.14 mg/L, the concentration of manganese is 0.002 3—1.28 mg / L, with the exceeding standard rate of 60.87% and 82.61%, respectively; The spatial distribution of iron and manganese is greatly influenced by the groundwater pH value and Eh, and there is an inhibition between them, and the distribution characteristics are obviously different; According to the calculation of non-carcinogenic health risk, the health risk caused by iron and manganese in groundwater is low, and the influence degree of different age groups is children > adults.