This article focuses on the policy itself， collecting and analyzing policies during the outbreak period of COVID?19 in Jiangsu CDC by using field observation. The policy texts are analyzed mainly in 4 aspects of release time distribution， issuing unit， issuing form and policy content. It is found that the number of national and provincial guidance documents has increased sharply during the emergency period of COVID?19 between January 15 and 31. Taken Jiangsu Province for an example， the provincial policy issuing units are single， and the texts which are mostly “notice” type， which has indeed helped with the immediate feedback， rapid response and the guidance. While it also found that there has insufficient attention to the diversity of policy issuance and the long?term implementation. Summarizing the experience of the formulating policy and principle of policies， this article proposed that the policy concept of public health emergencies should be improved from single authoritarianism to multiple cooperation; policy orientation should be changed from“war emergency”to “peace and war combination”; policy value should be changed from “short?term” emergency to“normalization”guidance.