As an Internet application and social form of fusion of virtual and real, the metaverse is considered the future of the internet. In the past two years, the metaverse has set off a boom in the global technology and investment fields, affecting the development of many industries such as culture, tourism, education, and industry. The library pioneering practice of the metaverse include 3D games in virtual libraries, virtual reality technology applications in physical libraries, etc.; The future scenarios of library development of the metaverse include metaverse virtual library, metaverse learning and reading, metaverse reference consultation, metaverse diversified collaboration, etc.. The future development of libraries in the metaverse perspective should grasp the strategic opportunities of a new round of scientific and technological revolution, expand the depth and breadth of related technology applications, and pay attention to potential social problems and uncertainties.