This course mainly looks at the impact of information technology on the development of human society from the information revolution, and looks at the future direction of science and technology from 5G and intelligent Internet. What does the arrival of 5G mean? High speed, large capacity and low latency are the basic characteristics of 5G networks. Therefore, 5G will greatly accelerate the implementation of new applications of various intelligent technologies, open a new era of mobile communication development, and promote the construction of a fully mobile and fully connected society.