Abstract: E-reserves play an important role in the process of teaching innovation and transformation in colleges and universities. For the library, providing teachers and students with comprehensive, sufficient and personalized online course reference resources that meet the needs of the course is the key entry point to meet the innovation and reform of current college teaching information. This paper proposes the idea and method of constructing the service content and service interface of e-reserves under the current library LSP (FOLIO) microservice environment and online Learning Management System (LMS) microservice environment, and realizes the use of open e-reserves service based on the LTI (Learning Tool Interoperability). This is the basic work for Shanghai Jiao Tong University to build the first App application based on FOLIO platform, which has changed the traditional idea of e-reserves construction, explored the new service mode and technical strategy of the library under the microservice architecture, and improved the openness and influence of library services.