This paper uses literature analysis methods, analyzes the status of emergency information management elevelopment for public health emergencies, uses policy analysis methods, reviews the basic course and results achieved of emergency management and emergency information management system construction in China. Based on the observation of public opinion on the Internet, combined with the occurrence process of COVID-19 epidemic and some information phenomena, analyze the information problems exposed in the four stages of the development of the COVID-19 epidemic. And from the perspective of the construction of emergency information management system, the problems are elaborated and analyzed, and suggestions for improvement are put forward.