Abstract: This paper uses grounded theory to analyze the interview data of 27 interviewees and extracts the influencing factors of government information public continuance use behavior under public health emergency. Based on the extracted factors and COVID-19, a questionnaire is designed and sent to 170 users. Then the paper identifies the trigger path of government information public continuance use behavior under public health emergency through fuzzy set qualitative comparative analysis, summarizes its mode, and further identifies the core factors and their evolution law, so as to realize the control of emergencies and improve the government’s ability to deal with emergencies. The results show that the trigger paths are in difference in each stage of the epidemic. Personal drive, information quality and government feedback are the key factors to trigger the continuance use of public government information under public health emergency.

Key words: Public health emergency, Government information, Information openness, Continuance use, Factors evolution, COVID-19