The innovation of frontier technologies such as artificial intelligence,big data,Internet of Things,and 5G has continuously promoted the rapid development of industrial Internet under the background of Industry 4.0 era.As a major manufacturing country with the most complete industrial chain and the highest industrial added value in the world,China has become the core direction of information infrastructure construction and stepped into the fast lane of development under the premise of strong government support and promotion of the development of "new infrastructure".In the era of Industry 4.0,industrial interconnection is the core driving force for the transformation and upgrading of the manufacturing industry.Core technologies such as big data,cloud computing,artificial intelligence and the Internet of Things have gradually become important technical support for the development of industrial Internet.In the industrial Internet system,the industrial Internet of Things connects the device layer and the network layer,laying the foundation for the interconnection of everything,data acquisition,application development and other functions in the industrial scene,and finally realizing the goal of digitization,networking and intelligence of the manufacturing industry.