The “four new” economy represented by “new technologies，new industries，new formats and new models” is the general trend of global economic development. China implements innovative development strategies，fosters new kinetic energy development，and reforms supply-side structure. The four new economies play a key leading role in it. In recent years，China’s four new economies have developed rapidly in many fields such as big data and its applications，artificial intelligence and shared economy. Relevant policy mechanisms have become increasingly perfect. In the future，efforts should be made to further strengthen personnel training，industry supervision，and factor channel construction.