There are many departments in the library, such as lending department, newspaper department, children's department, technology department, editorial department, counseling department, ancient books department, etc. The staff of each department has their own division of labor. The external relations department is mainly to guide readers to borrow books, guide readers to use the library and answer questions raised by readers. The editorial department mainly purchases and processes books according to readers' opinions. The guidance department provides professional training for library staff in the city and so on. There are many contents in library work, and sorting books is only the most basic one.