With the rapid development of information technology, artificial intelligence (AI) has become the core driving force for the innovative transformation of libraries. Technologies such as big data and machine learning empower library services, enabling significant improvements in resource organization and retrieval, knowledge service provision, and operational management optimization. They not only enhance service efficiency and user experience but also promote the transition towards intelligent and integrated institutions. Libraries must attach great importance to intellectual property protection and data security, and build an inter-disciplinary collaborative service ecosystem. Relevant research elaborates on its profound impacts from three dimensions: technology, applications, and development trends.