Public libraries were closed in response to the sudden outbreak of COVID-19. However, during the closing period, public libraries still provide a variety of professional services by integrating resources. Wuhan Library, which is at the forefront of epidemic prevention and control, has launched a number of online services and extended services, demonstrating the value and mission of public libraries. In the post-epidemic period, public libraries need to seriously consider the impact of the epidemic on library services content, emergency response and community of Shared future. Moreover, public libraries need to promote their development by implementing health information service, information literacy education and epidemic information collection.