Abstract:China is one of the main producers of nonferrous metals. The industrial wastewater produced in the smelting process of nonferrous metals has brought great harm to the environment. In order to continuously strengthen the supervision of water pollution in nonferrous metal smelting industry, China has issued a series of regulations and policies. At the technical level, most nonferrous metal smelting enterprises treat wastewater by chemical, physical or biological methods, basically achieved the goal of wastewater discharge up to standard. However, the environmental pollution problem of smelting industry is still prominent, and pollution accidents often occur. In the future, efforts need to be made in source pollution reduction, process control, end treatment and other aspects to continuously improve the level of wastewater pollution prevention and control in the non-ferrous metal smelting industry and help improve the ecological environment.