The year 2021 marks the centenary of the founding of the CPC. In this year，there are a series of triumph news in China’s space field，Chinese Olympic delegation are unstoppable in 2022 Tokyo Olympics，the cuteness of Yunnan wandering elephants makes the world an impression，Meng Wanzhou returning to China torches the hearts of Chinese people. It is in this year that mainstream media make all-out efforts to create convergence media production，as well as expand their influence and lead the public opinion with popular works，develop the new media continuously. Based on the industry observation and data monitoring，CTR publishes Annual Report on Media Convergence Communication Effect of China’s Radio and Television Agency in 2021，presenting the network communication effect of mainstream media objectively.