The construction of 5G customized private network is the key to the development of 5G network and 5G business growth.The deployment and application of 5G customized private network can provide reliable network, data security, cloud collaboration

and other services in various parks (factories, office parks, ports, campuses and hospitals)，which meets the needs of customized network service of smart factory, smart park, smart transportation and smart campus. This paper analyzes the deployment requirements and deployment modes of 5G customized private network in different industries, hoping to provide reference for the application of 5G customized private network.