A good library management system must have a friendly and convenient user interface, simple and convenient operation, meet the daily business processing needs of urban libraries and universities, not only reduce the labor intensity of managers, improve work efficiency, but also provide convenience for readers to consult materials, make full use and rational allocation of library resources, clearly allocate the division of labor of librarians, make the book purchase process more reasonable, and thus enhance the appreciation and mobility of library resources. In addition, with the help of the advantages of library management system, we can realize the reform of traditional library management mode and effectively improve the management and service level of the library. Nissin is such a professional library management tool, which can meet the requirements of daily business processing and provide convenience for readers to consult materials.