Abstract:The import of productive services can not only improve the quality of domestic manufacturing products and increase the output scale by improving the supply quality and structure of intermediate goods, but also promote the technological upgrading of domestic manufacturing industry through technology spillover, knowledge spillover and human capital spillover effect. The growth of domestic manufacturing output will drive the expansion of productive service import through demand effect, and the upgrading of domestic manufacturing will drive the quality improvement and structure optimization of productive service import by increasing the demand for productive service rich in technology, knowledge and human capital elements. As a result, a virtuous circle of a two-way linkage mechanism in which the forward driving effect of the import of productive services on the upgrading of the manufacturing industry and the backward pulling effect of the upgrading of the manufacturing industry on the import of productive services are mutually promoted is formed. Based on the input-output technology of WIOT, the industrial correlation between China’s import of productive services and the domestic manufacturing industry from 2000 to 2014 was analyzed. The results show that the forward driving effect of domestic producer service input on the development of the manufacturing industry is far greater than that of foreign producer service input, and the backward driving effect of manufacturing industry development on domestic producer services is far greater than that of producer service import. The import of productive services has a significant forward promoting effect on China’s manufacturing output growth and technological upgrading, and the higher the quality of the import of productive services, the stronger the promoting effect on manufacturing upgrading. The growth of manufacturing output has a backward pull effect on the import scale of productive services, while the upgrading of manufacturing technology has a backward pull effect on the import quality of productive services, and the manufacturing industry with higher technology density has a greater pull effect on the import demand of high-technology density productive services. Therefore, with the improvement of supply quality and technological upgrading of local manufacturing industry as the main body, and the improvement of import quality and structural optimization of productive services as the catalyst, a two-way linkage network of “import of productive services + upgrade of manufacturing industry” should be established to integrate and promote domestic and foreign industries. And the following three aspects should be followed. The first is to increase the investment of foreign productive services in the domestic manufacturing industry by expanding market opening, especially to increase the level of openness in the “FCB” field to guide and promote the input of foreign advanced productive service elements; the second is to fully tap and utilize the technology spillover, knowledge spillover and human capital spillover effect of the import of productive services to effectively promote the transformation and upgrading of manufacturing industry and high-quality development; the third is to accelerate the transformation and upgrading of the manufacturing industry to further promote the import of high-quality productive services.