Reduction of carbon dioxide emission in the non-ferrous metal industry is critical for realizing the carbon peaking and carbon neutrality goals in China. State-of-the-art of carbon dioxide emissions in the non-ferrous metal industry were summarized and analyzed here. Based on this, the low-carbon technology path of non-ferrous metal industry, especially the key smelting industry, was put forward. The analysis shows that the aluminum smelting industry is the core of carbon dioxide emission reduction in the non-ferrous metal industry. It is expected that the non-ferrous metal industry will achieve a peak of carbon dioxide emission in 2025 with the peak value being 750 million tons carbon dioxide. The carbon dioxide reduction technology path of the non-ferrous industry mainly includes four parts, which are, green energy substitution, advanced low-carbon technologies and equipment, metal recycling, and carbon capture and utilization (CCU). Among them, metal recycling is the key path for the non-ferrous industry to support the realization of the national carbon peaking and carbon neutrality goals.