Purpose/Significance To discuss the current application status, service innovation role and future impact of artificial intelligence (AI) technology in medical libraries, and to provide theoretical support and practical guidance for the digital transformation and intelligent upgrading of medical libraries. Method/Process The current application status of AI technology in service innovation is summarized such as intelligent literature recommendation, automated classification and indexing, data mining, etc. Combined with specific case analysis and preliminary quantitative assessment, the unique role of AI in the innovation of medical library services and the potential disruptive impact in the future are deeply discussed. Result/Conclusion AI technology demonstrates great potential in medical libraries, especially in the fields of intelligent decision support and personalized services. However, it also faces practical challenges such as high costs and data privacy. It is essential to enhance the cultivation of interdisciplinary talents, break through the bottlenecks in technical implementation, and stimulate the vitality of service innovation.