The development and innovation of the 5th generation mobile communication technology can improve the low speed and high energy consumption of the traditional Internet of Things to a large extent, while the development of the Internet of Things technology can promote the popularization of the 5th generation mobile communication technology in all aspects. Therefore, fundamentally speaking, the two technological contents should complement each other. In addition, the construction of mobile communication system mainly depends on the network. The full-coverage network with the Internet of Things as the core can realize the safe operation of 5G technology, provide a reliable and safe working environment for technological development and innovation, and promote the large-scale popularization of this new technology.