COVID-19 Epidemic has greatly affected the services and development of public libraries. Public libraries across the country had to close down. The paper analyzes professional practices of the Taiyuan library from information resources integration, services innovation, professional personnel training and a community of shared future. The practice of Taiyuan Library has played the basic function of the public library, taken the initiative to bear the social memory function of the information age, and promoted the construction of the community of shared future of the library industry. In the period of normalization and post epidemic prevention and control, public libraries need to think and innovate in space environment, service mode, librarians' quality and community of common future.