In the age of 5g, intelligent factory will greatly improve working conditions, reduce the labor input in production line, and improve the control of production process. The most important is to use information technology to link the design, production, sales and other links, and on this basis to achieve the optimization and integration of resources, so as to further improve the production efficiency and product quality of enterprises. In addition, in large production units, the mass production process is automatically controlled, so the high-density controllers, sensors and actuators need wireless connection.