A method and apparatus for managing an intelligent library on Internet of things are provided, belonging to the field of book intelligent management technology, including administrator terminals, reader terminal, a library management server, an intelligent management machine and an RFID electronic tag. An information database and a library management system are arranged in that library managementserver. The library management system comprises a retrieval unit, a book reservation unit, a book borrowing and returning unit, an intelligent sorting and classification unit, a book evaluation unit,a service unit, a charging unit and a payment unit. The intelligent management machine includes a fuselage body, a touch screen, a camera, an RFID reader and a controller. The device and method improve the efficiency of borrowing books by readers, put an end to the phenomenon of misplacement of books, realize automatic book borrowing and returning process, can take books 24 hours, realize the efficient operation of the library, greatly improve the humanized service level of the library and book circulation efficiency, is conducive to the efficient management of library literature, improve thereading experience and reading interest of readers.