The school library, as an after-school knowledge expansion library for students, stores a large number of books and textbooks of various categories. In such a large number of books, in order to facilitate readers to quickly find the books they want, the library can be installed to check the all-in-one machine. Before the books are stored, the book information is entered in the all-in-one machine, and the readers can quickly find out the location of the books through the all-in-one machine.