Under the background of new consumption，communication，channel，2B&2C Internet technology and other factors reshaping marketing，media advertising market in China showed a slight decline in total business volume but better than the global trend by the influence of COVID-19 in 2020. There is a certain category fluctuation in the advertising of brands，some of them pay more attention to “integration of communication and marketing” when they set marketing goals. In terms of the operation of media platform，Internet advertising revenue is the highest，among which the effect advertising business grows significantly. Meanwhile，the performance of intelligent terminal devices is worthy of attention because of its scene value，and almost all kinds of media advertising services show the characteristics of integration and productization. Marketing agencies are speeding up their adjustment to adapt to the changes in the environment：transformation of traditional agents has been accelerated，at the same time new agencies continue to emerge，which of them use integration & digital tools and services to meet the needs of the market.