In 2020，the Japanese economy suffered a negative growth due to the impact of COVID-19. The decline of corporate performance and the cancellation，postponement and budget reduction of many large-scale events represented by the Tokyo Olympic Games brought a huge impact on the media whose main revenue is advertising. Prevention policies such as encouragement to stay at home have accelerated the overall digital transformation of Japanese media and related industries. The increase in online demand has promoted the rapid development of online shopping，online office，e-books，online paid concerts and other industries，and the Internet advertising market continues to grow against the trend.