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.

Library is the external storage and selective transmission mechanism of social memory (usually expressed in written records). In other words, the library is the memory device and diffusion device of social knowledge, information and culture.

Function:

Since the emergence of human society, words have appeared, and books, the carrier used to record these words, have also appeared. It records the development and evolution of human history since ancient times. One of the functions of the library is to collect, process, arrange and scientifically manage these precious literature resources for readers to borrow and use.

The library exists as an institution to preserve the cultural wealth of all ethnic groups, and its task of preserving human cultural classics is the oldest function of the library. It is based on literature and carries out commercial activities.

However, due to the realization of computer networking and the rapid development of science and technology, libraries not only save handwritten and printed documents, but also save other carrier resources, in order to make better use of them.