The ranks of university librarians in China are usually divided into four levels: assistant librarians (junior librarians), librarians, associate research librarians and research librarians, which are equivalent to assistant lecturers (teaching assistants), lecturers, associate professors and professors in China.

Ordinary librarians are only non-professionals of the library and are not included in the professional ranks of university libraries. Non-academic librarians are also divided into five grades, that is, librarians are the lowest grade.

Non-academic libraries usually adopt the classification of librarian ranks similar to those in China. At present, librarians engaged in teaching tasks in university libraries in China sometimes use the ranks of lecturer, assistant professor, associate professor and professor of university librarians in the United States, Canada and other countries.

Librarians in extended information libraries should not only have a bachelor degree or above in library science (or information management, also known as library science in Taiwan Province Province) or related majors, but also often need to master at least one other subject knowledge at the same time. Therefore, librarians, especially reference librarians, are often required to be sages with at least one or more master's or doctoral degrees.

Traditionally, library services are divided into two categories: one is technical services, mainly including acquisition, classification and cataloging, system support, etc. Another kind of reader service includes circulation service, reference service, thematic service (thematic research guidance) and information literacy education.

Librarians with different functions need to master different knowledge and skills. Therefore, librarians can be divided into interview librarians, cataloguing librarians, system librarians and reference librarians according to their functions.

References:

Baidu encyclopedia-librarian