1. Librarian: Responsible for the daily management of the library, including the procurement, cataloging, classification, borrowing and consulting of literature resources.

2. Readers: people who borrow library literature resources. Readers can query related books, reserve collection resources, borrow and return books through Tian Rui Library Management System.

3. Librarian Assistant: Assist the librarian to complete various tasks, such as counting inventory, handling lost or damaged books, and assisting in cataloging.

4. System administrator: responsible for the maintenance, update and configuration of the system to ensure the normal operation of the system and data security.