Countries participating in the international division of labor each try to occupy the industrial highlands, obtain competitive advantages, and promote sustainability of economic development. Based on Porter’s Diamond model, it is widely believed that producer services are vital to support the manufacturing industry. Consequently, this paper selects samples of 55 countries and uses data from 2010 to 2017 to empirically test the impact of producer service’s opening on the export competitiveness of the manufacturing industry. The results show that the opening of producer services in a country promotes the improvement of international competitiveness of manufacturing industry, and the improvement effect is more significant in developed countries than in developing countries. Additionally, the negative impact of foreign capital access restrictions on the export competitiveness of the manufacturing industry is greater than the positive impact of service trade opening. It is also found that the restrictions on foreign capital’s opening in the financial sector have the biggest negative impact on manufacturing exports than that of other divisions of the producer service industry. To improve national competitiveness, it is suggested that the integration of service and manufacturing industries should be enhanced and to decrease FDI access to financial and transportation services restrictions.

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