According to the relevant information of the Ministry of Education, the opening hours of primary and secondary school libraries (rooms) are not less than 40 hours per week in principle, and the number of new (updated) paper books per student is not less than 1 book per year. Therefore, primary and secondary school libraries are open at least five times a week, with 8 hours each time.

A library is an institution that collects, sorts out and collects books and materials for people to read and refer to. As early as 3000 BC, libraries appeared. Library has the functions of preserving human cultural heritage, developing information resources and participating in social education.