Abstract: The Internet convergence is driving the transition of manufacturing to digitalization, networking, and intelligence. It is an important path to promote the high-quality development of Chinese manufacturing. Based on the data of Chinese manufacturing listed companies from 2009 to 2017, this paper establishes a panel regression model to study the influence of Internet convergence on the total factor productivity of the manufacturing and its mechanism, and examines the moderating effect of the labor structure. The research results show that the convergence of manufacturing and Internet at the technical and business levels has improved total factor productivity, which is mainly achieved by optimizing the allocation of internal capital elements of enterprises. It also finds that Internet convergence and the labor structure have complementary effects, and the increase in the proportion of high-skilled labor strengthens the role of Internet convergence in improving the total factor productivity of manufacturing and the allocation efficiency of internal capital and labor factor in enterprises. The main problem of China is that the convergence at the market level is low and the quality is poor, the proportion of highly skilled labor is low and the growth rate is slow. The research conclusions provide direct evidence from the micro level that Internet convergence improves total factor productivity, and provides policy inspiration for promoting high-quality development of manufacturing.