Underground water pollution risk management and control method for non-ferrous smelting site

The invention relates to an underground water pollution control method for a nonferrous smelting site. The method comprises the following steps: determining groundwater pollution plume; a first reaction wall is arranged along the edge of the groundwater pollution plume and surrounds the groundwater pollution plume by a circle; acquiring groundwater pollution data through a plurality of first monitoring units arranged on the outer side of a groundwater pollution plume, wherein the first monitoring units are located on the outer side of an enclosed area of the first reaction wall; water circulation is carried out through a plurality of water pumping units arranged on the side, away from the first monitoring unit, of the first reaction wall, so that underground water flows through the first reaction wall to remove pollutants in the underground water body; and the water outlet end of the water pumping unit is regulated and controlled according to the groundwater pollution data acquired by the first monitoring uni