Abstract: To understand the distribution characteristics and pollution level of heavy metals in the water environment of Dumu River in Yinzhai scenic spot of Panjiang River,the concentration and temporal and spatial distribution of five heavy metals（Cd,Pb,Cr,Mn,Fe）in the waters of Dumu River are studied,and the Nemero index is used to evaluate the pollution level of heavy metals in water. The results show that:（1） The water temperature and pH of the Dumu River are from 7.6 to 20.6 and from 6.67 to 7.63 in 2019. Pb,Mn,and Fe has the same spatial and temporal distribution characteristics,while Cr and Cd concentrations have no obvious spatial and temporal distribution characteristics. pH has only extremely significant positive correlation with Fe concentration in water at Dumu and Yinzhai,and the temperature has significant or extremely significant positive correlation with Fe concentration in each sampling point.（2） The sources of heavy metals in 3 sampling points of the Dumu River of Panjiang River are analyzed. The results show that there is a significant correlation among Pd,Cr,and Mn in water at Maba（p ＜ 0.05）,and only Pd and Mn in water at Dumu and Yinzhai have an extremely significant positive correlation（p＜ 0.05）.The results of the principal component analysis show that the cumulative variances of heavy metals in the 3 sampling points is 84.119%,88.926%,and 90.422% respectively,in which Mn and Pb are the first principal components.（3） Heavy metal pollution assessment and ecological risk assessment are carried out in the waters of the Dumu River in Panjiang River. The average values of the single factor pollution index and multi-factor comprehensive pollution index of five heavy metals are Pb ＞ Mn ＞ Cd ＞ Fe ＞ Cr. The heavy metal pollution grade of Pb,Mn,and Cd are severe pollution,and Cr belong to no pollution.