Abstract: Non-copper coated solid wires are the future development trends for gas shielded solid wires. The research progress and application of nano-materials in non-copper coated solid wire were reviewed. It was concluded that the surface nano-coating of non-copper surface with corrosion resistance by increasing self-corrosion potential. The arc stability is improved by refining molten droplets and accelerating transition frequency. The nano-additives surface with coefficient and wear scar diameter of tribo-pair through several lubrication mechanisms on the rubbing interfaces such as physical adsorption or chemical reaction film, "micro ball" and "micropolishing", thus providing some theoretical guidance to decrease contact tip wear for non-copper coated solid wires.