Public information promulgation is the core component of risk communication in major public health emergencies and plays an important role in ensuring social order. From the perspective of the information dissemination process in major public health emergencies, and combined with the information needs of the public at different stages of the development of major public health emergencies, this research aims at formulating norms for information promulgation for major public health emergencies in China. Taking the public information promulgation as a foothold, the core elements and evolution path of public information communication in major public health emergencies are explored. There are three core elements of public information promulgation:certainty of instruction public information, moderation of explanatory public information and acceptance of credibility public information. Based on public opinion of incubation period, acute period and remission period of major public health emergencies, public information promulgation should focus on characteristics of the period. In addition, the balance, heterogeneous and standard of the public information promulgation of major public health emergencies as critical issues are revealed. The findings of the present research would be helpful in gaining the scientific methods of the public information promulgation for decision makers, so as to provide important expansion and a useful supplement for the research of emergency risk communication in China. It is hoped that this research will help promote the further improvement of the emergency management system of major public health emergencies in China, and provide a theoretical basis and methodological basis for effectively improving the efficacy of public information promulgation for Chinese emergency governance of major public health emergencies.

major public health emergency  /  emergency risk communication  /  information promulgation