Abstract: 【Purpose/significance】Under the background of the long-range global epidemic and "Healthy China 2030", medical li⁃ brary services are facing severe challenges. As an important knowledge reserve institution of medical institutions, medical libraries ur⁃ gently need to conform to the trend of library upgrading and technology development. It is an irresistible trend to build a smart service model of medical libraries.【Method/process】Based on the concept of intelligent service and the theory of information ecology, this pa⁃ per discusses the necessity of the construction of intelligent service mode of medical libraries from four aspects: national policy, peer competition, technological change and self-development. Based on the information ecology theory, the intelligent service mode of medical library is constructed, which consists of four ecological factors: medical intelligent resources, intelligent personnel, intelligent technology and intelligent environment.【Result/conclusion】This study will help to provide solid medical information service support for medical science and technology innovation in the construction of a healthy China, and enhance the core competitiveness of medical libraries.【Innovation/limitation】The complexity and maturity of technology and the security of medical library applications are the re⁃ search difficulties.