Open class originated in Britain, which is a distance teaching in Britain. This teaching method can be traced back to 1969, the Open University established in Britain. BBC TV started the Open University project in 1990s. With the rapid development of digital TV and network technology, the concept and practice of distance education have changed greatly. In particular, the British "Open Learning" program, which began in 2006, based on the principle of * * * sharing resources, uses the function of network distance and cross-connection to create online open courses through computer virtual space under the leadership of the open university team. Today, 225 countries and regions have become practitioners of this plan.