(The main purpose of the library management system is to realize the information management of the library. The main business of the library is the borrowing and returning of new books, so the core function of the system is to realize the borrowing and returning of books. In addition, it is also necessary to provide functions such as book information query and reader borrowing status query. After the implementation of the project, the process of borrowing and returning books in the library can be improved and work efficiency can be improved.)