During public health emergencies, the work of prevention and control must be normalised, and coordination between economic development and epidemic prevention is crucial. However, in China, there is a lack of research on participatory governance in public health emergencies, particularly from a legal perspective. Existing studies are insufficient in terms of using legal texts and exploring legal governance in a normative sense, and there is an inadequate in‐depth exploration of issues such as the legitimacy, path, motivation, and other aspects of participation. This article addresses these gaps by analysing the issues of participatory governance in public health emergencies from a legal perspective, using practical cases as examples. The research has shown that there are significant differences among the three types of organisations regarding their internal motivation, external incentives, and legal basis, and therefore it is necessary to distinguish different participation paths. Finally, we propose several measures to promote the active and sustained participation of organisation in governance, including cultivating the ability of organisations, emphasising organizational demands, seeking consensus, strengthening the guiding role of legislation, and broadening the channels of engagement.