The total collection of electronic resources has exceeded 5T, forming a high-speed, smooth, safe, reliable, convenient and fast information resource service guarantee system integrating traditional printed literature resources, modern electronic information resources and virtual network resources, so that teachers and students in our school can query, read and download all kinds of literature resources in the library at any time and conveniently through going to the library or using the network, and enjoy all kinds of humanized services provided by the library. The library's network platform, automatic management platform, massive information storage platform, digital resource platform and one-stop retrieval platform for characteristic literature information have been built. It also adopts the integrated service mode of collection, borrowing, reading, inquiry and transmission, and uses the service modes of borrowing and returning, book reading, document copying, interlibrary loan, special topic retrieval, online consultation, information retrieval, new book release, subject navigation, teacher's recommendation to buy books, document original text transmission, virtual reference consultation, project novelty retrieval, subject librarian, information literacy education, user training, network retrieval and characteristic electronic resources. In order to further cooperate with undergraduate teaching and improve the utilization efficiency of library resources, the library has established the "Undergraduate Teaching Reference Book Information Management System", and strived to provide an integrated teaching reference book information platform for all teachers and students, helping teachers and students to quickly obtain books, periodicals and network information resources related to majors and specialized courses. In particular, the integration and service of yak characteristic literature information made by the "International Yak Information Center" of our library has attracted great attention from yak science and technology circles at home and abroad and is at the leading level in China. The library of Gansu Agricultural University has basically established an "all-round and deep-seated document information service system", which has gradually realized two changes: First, the function of the library has changed from a single document information service function to a dual function of document information guarantee and quality education, making the library an important place for school document information guarantee service center and quality education. Second, the service of the library has changed from serving the school's teaching, scientific research and personnel training to serving the society, and has become an important base for agricultural literature information center and social informatization in Gansu Province.