“Internet+” is the sublimation and development of the Internet, which aims at promoting the Internet’s deep integration with economy and society to propel economic and social innovation and development. Under the “Internet+” circumstances, the Internet plays a role not only as a kind of information infrastructure, but also as a more important innovation element for improving production, trade and management of economic and social entities. Under such background, in this paper, the origin of “Internet+” and its meaning are analyzed, and the national actions to push it forward are described. From the aspects of promoting mass information interconnection and access, improving network management and network performance, supporting convenient network access and interaction, adapting to the integration of industrialization and informationization, and production-orientation, the various kinds of new networking paradigms are presented, which are suitable to “Internet+”. We then discuss the significant challenges faced by “Internet+” in the aspects of networking scalability, heterogeneity, performance and security as well as networked applications. In the end, we draw some conclusions.