The development of the internet has a subversive influence on the development of various industries, especially the traditional manufacturing industries. The infiltration of and development of the internet, on the one hand make great changes to the traditional manufacturing industry productivity, what make traditional industry productivity gets great development, such as the production of a range of elements continuous expansion, greatly enhance the quality, allocation efficiency increased significantly and innovation and upgrading of traditional industrial development model and optimization of organizational structure; on the other hand through influence the ownership of production of traditional manufacturing industry, change the status and relationship of people in direct production process and exchange process and distribution process, profound adjustment the relations of production of traditional industries, such as management mode innovation, changes of exchange relations, distribution adjustment mechanism etc.. In this paper, based on the political economics basic principle of the Marx doctrine, attempts to analysis the intrinsic mechanism and influence mechanism of “internet plus” on the traditional manufacturing industry enterprises from the productive forces and production relations, in order to fully demonstrate the essence and internal function of “internet plus”.