Artificial intelligence technology innovation not only improves the production efficiency of manufacturing, but also reshapes the "skills-technology" matching relationship and income distribution of different groups in the labor market in the industry. Based on CFPS Data, this paper examines the impact of artificial intelligence technology innovation on the gender pay gap in manufacturing industry, and theoretically explores the underlying impact mechanism. The results show that :(1) Technological progress widens the gender wage gap in the industry, but makes the overall wage level tend to rise; (2) Technological progress narrates the gender income gap of low-skilled groups, but widens the gender income gap of high-skilled groups; (3) Artificial intelligence technology innovation in the manufacturing industry affects the gender wage gap mainly through education level, gender preference in the industry, women"s advantage in refinement ability and the decline of the demand for physical skills in low-skilled jobs.