Abstract: With the increasing demand for environmental protection, the replacement of copper-plated welding wire by non-copper-plated welding wire is an industry trend. At present, the production process of non-copper-plated welding wire at home and abroad is mostly focused on using the powder drawing process to improve wire feeding, rust resistance and electrical conductivity, but the effect is not good. In this study, based on the non-copper-plated welding wire production process, a welding wire with good cleanliness, smooth and bright surface and almost no lubricant residue was prepared by adopting the innovative polishing process with water-soluble liquid as the lubricant and process combination of special mold selection, lubricant ratio, diameter reduction process parameter selection and high pressure circulating water cleaning. The prepared welding wire can avoid the environmental pollution and personal health problems caused in the copper wire production process, has the characteristics of excellent wire feeding property, strong rust prevention ability, small wear of the welding nozzle and excellent welding operation performance, and is particularly suitable for working conditions where the copper content is strictly limited.