In the context of the weakening of the advantages of traditional factors and the tightening of environment constraints, it is of great practical significance to build a modern, clean and sustainable manufacturing development system. Guiding the deep integration of manufacturing and service factors is a viable path to achieve both economic and environmental benefits and realize the green development of manufacturing. The effect of manufacturing servitization on carbon intensity was empirically analyzed and results showed that: manufacturing servitization could reduce carbon intensity; the servitization of low-tech manufacturing had the strongest carbon emission reduction effect; the developed economies’ inhibitory effect of manufacturing servitization was better than that of developing economies; the higher knowledge-intensive service factors were invested in the manufacturing industry, the stronger the carbon emission reduction effected; the improvement of labor productivity and the optimization of industrial structure were the intermediate channels for the servitization of the manufacturing industry to reduce carbon intensity. Therefore, rational, precise, and differentiated economic and environmental policies should be formulated to promote the in-depth integration of service elements into the production process of manufacturing enterprises, and to improve the servitization level of the manufacturing industry, so as to promote the green development of the manufacturing industry, and facilitate the smooth realization of the "dual carbon" goal.