Known as the "knowledge treasure house, knowledge fountain, social heart, the second classroom outside the school", the online library has the following functions:

1, which speeds up the spread of human cultural heritage. Electronic preservation has broken through the limitations of the era of handwriting and printing. Electronic publications have the characteristics of large storage capacity, short publishing cycle, convenient retrieval, equal emphasis on audio and video, and low mass production cost.

2. The development of information resources has been greatly strengthened. Traditional libraries have collected a large number of literature information resources, and their basic functions such as remote service have greatly improved the "timeliness of literature and the speed of the spread of human civilization" in the process of global integration of today's society.

3. Search and filter the resources outside the library with the network as a link, and become a virtual collection, which is more modern-the collection literature is going digital.

4. Participate in social education, ideological education, civilization construction, cultural quality and enrich people's cultural life education.