Promoting the high-quality development of public libraries is a new requirement in the new development stage, aiming at improving service coverage and effectiveness, and promoting the balanced development of high-quality services. From the perspective of high-quality development, equalization, standardization, inclusiveness, quality, high efficiency, and sustainable development are the constituent elements, and there are new changes in requirements. From the perspective of high-quality development, public libraries have new roles, such as quality reading service centers, public communication centers, innovation centers, and local cultural heritage centers. During the "14th Five-Year Plan" period, there are new key tasks for the high-quality development of public libraries, including library space reengineering, service coverage of urban and rural areas, in-depth information processing, full application of smart technology, cultural and travel integration, and modern governance capabilities.