1. Reader service: Librarians should interact with readers and provide advice, help and guidance. Handle all kinds of problems and needs, including book search, reference consultation, technical support, etc. Patience and professional knowledge, and interaction with readers can also bring fun and a sense of accomplishment.

2. Book management: Librarians should be responsible for the purchase, classification, cataloging and maintenance of books. Only with certain organizational ability and meticulous work can we ensure that library resources can be effectively managed and provided to readers.

3. Maintain the learning environment: The library is a quiet learning and reading environment. Librarians should keep good order and environment and ensure that readers can have a comfortable learning space. It is necessary to conduct inspections, organize bookshelves and deal with noise.