Since the outbreak of the COVID-19 epidemic，Sichuan Province has experienced three stages：the concentrated outbreak caused by the spread of the epidemic in Wuhan，multiple rounds of small-scale local epidemics caused by the cross import of overseas and provincial epidemics，and the continuous emergence of cases in many places caused by the omicron virus strain. COVID-19 has a significant impact on social governance because of its fast transmission speed，wide infection range，and great difficulty in prevention and control. Digital economy and big data technology provide strong support for epidemic prevention and control in Sichuan Province. The network platform timely announces the latest epidemic situation and epidemic prevention knowledge；The government health communication platform assists in site management，floating personnel and epidemic related personnel management；5G and big data technology can meet the needs of telemedicine，material docking and deployment，and alleviate the shortage of medical resources in the region；Artificial intelligence technology enables image and gene diagnosis analysis，and the use of contactless intelligent products，which improves the efficiency of treatment and reduces the risk of infection for medical staff；Health declaration and promotion of health code sharing and exchange provide certification support for migrant workers to return to their posts in a healthy way，and specific sections of the online government platform help small and micro enterprises and individual businesses in the province to return to work. COVID-19 relies on the bottom advantage of the digital economy to activate the potential of grass-roots governance，strengthen the consultation and dialogue between the government and the people，enable intelligent governance to improve the quality and efficiency of social governance，and provide new ideas for social governance innovation.