Groundwater pollution risk assessment is usually obtained by adding groundwater pollution load assessment and inherent vulnerability,but there are many superposition methods,but there is a lack of comparison and verification between various methods. This study selects the Beijing Mi-Huai-Shun area as an example,uses the GIS platform for the composition characterization,and compares the three groundwater pollution risk superposition methods:additive method,matrix method,and calculation method. And using the ...