The COVID-19 pandemic has not only impacted the smooth ongoing of the domestic PE curriculum in China, but also brought new innovation directions. Based on the research background of online teaching in China during the "COVID-19" epidemic, this study uses the policy research method to understand the policy requirements of the "suspended class, ongoing learning" issued by the Ministry of Education of China. As a grass-roots physical education teacher in the heavily affected area of the "COVID-19" epidemic, recorded the current situation, quality, content, methods and effects of online teaching during the "COVID-19" epidemic by observation and collated them into text. The text materials mainly came from the official website of the Ministry of Education of China, major news media reports, and the online teaching of grass-roots physical education in multiple regions. Drawing on the core concept of expanding supply scope and enhancing supply efficiency of China's supply side structural reform, and proposes the concepts of integrated design for the "top-level configuration" of micro-classes, integrated implementation of micro-classes based on "separation of business and procurement", and integrated management of micro-classes following the "macro-control" principle. Among them, the design, implementation and management of online sports micro-classes are carried out based on two modes: the Wal-Mart operation mode and the airport operation mode. The discussion on the operation of the MOOC platform is carried out from two dimensions, namely, the information interaction mechanism and the platform maintenance mechanism of the platform.