Abstract: Besides emergency response effective risk communication, is essential for major public health emergencies. It is based on rational cooperation and dialogue amony the government, various professional institutions, the public and the media, and it plays an important role in enhancing the government’s prestige, channeling public sentiments and maintaining social stability. This paper explores COVID-19 risk communication, whether decision makers, professional institutions and experts have the correct recognition of risk of public health emergencies, whether the government’s convey of risk information, experts’ understanding of risk information and the public’s understanding of risk information are consistent. It is the key to effective risk communication work in a public health emergency. In the stage of dynamic surveillance and risk assessment, scientific cognition and scientific decision should be adhered to. In the emergency response, information disclosure and risk warning are both emphasized, and the redundancy of informal information is maintained to form the largest common divisor of the consensus among groups. Through good law and good governance, risk communication should be promoted within the scope of legal regulation and constraint.

Key words: mutual direction model ,  risk communication , trust dilemma ,  trust reconstruction