The library is an important communication place, which plays an important role in cultural construction and educational development. However, for a long time, due to the limitation of economic conditions, there is a big gap between China's library industry and foreign countries. With the advent of the Internet era, the appearance of digital library provides a rare opportunity for the leap-forward development of China's library industry. With the digital library, remote mountainous areas and western areas can enjoy the same reading conditions and educational opportunities as citizens in big cities, and there is no 24-hour waiting service. With the development of Internet, digital library has overcome the limitations of traditional book printing and provided convenience for wider dissemination. Some researchers believe that digital libraries have rediscovered the value of books.