The period from 2016 to 2021 was the key five years for China’s air pollution control. Remarkable results have been achieved in the control of air pollution，in which the government-led public relations and communication practice has played an active and important role. This study focuses on sorting out the communication practice carried out by the government in the process of air pollution control since 2016. According to the public opinion environment in different stages，the practice of the government’s communication is manifested in timely response to public opinions，active guidance by news release，and interpretation by experts and opinion leaders. At the same time，these efforts have been fruitful at present：the concept of “winning the battle to defend the blue skies” has been increasingly deeply rooted in the hearts of the people，atmospheric control requires the active participation of all sectors of society，and 80% of the public is satisfied with the effectiveness of atmospheric control. From the above communication practice，we can also conclude the laws and characteristics of the construction of government public relations：the communication attitude is becoming increasingly active，the communication mechanism is becoming increasingly perfect，the communication area is expanding in multiple circles，multi-subjects actively participate in interaction on hot topics，and the communication channels are diversified and rich. In the future，the development of government communication and the construction of public relations will focus on values，internationalization and sustainability at the overall strategic level，while emphasizing the coordination of multiple subjects and multiple issues in the specific strategic aspect.