First, trade in services will promote domestic circular development. With the rise of China's economy, the service industry has now accounted for more than 50% of GDP, and the characteristics of service economy are outstanding. The leading role of service industry in the development of primary and secondary industries has been continuously enhanced, and the consumption of modern service industry has become increasingly vigorous. This year's service trade fair held eight special exhibitions on culture, finance, winter sports, tourism services, service robots, education services, sports services and 5G communication services, and carried out a variety of project negotiation, industrial docking and summit forum activities, which played an important role in strengthening exchanges and foreign cooperation in the domestic service industry and absorbing global high-quality resources. It will improve the technological innovation level of domestic service enterprises and realize industrial upgrading, so as to better meet the needs of domestic economic development and upgrading of residents' consumption structure for high-level service industries. At present, China's services related to digital economy, such as big data, 5G, cloud computing, artificial intelligence, e-commerce and Internet platforms, have shown great vitality, especially in the prevention and control of COVID-19 epidemic this year, these industries have shown strong anti-risk ability, which has inspired the whole country.