The task of the library is mainly to buy, keep and circulate books, and at the same time, to improve the system of book borrowing and compensation. The main purpose of the book purchase link is to make the books purchased suitable and not to buy them indiscriminately. The preservation of books is mainly to do a good job in book registration, cataloging, classification and shelving, and pay attention to moth prevention and moisture prevention. Book circulation should proceed from the convenience of teachers and students, establish a reasonable borrowing system, and do a good job in promoting new books. In order to protect books, a compensation system should be established and strictly enforced.