The development of the Internet has broken the shackles of time and space for people to acquire knowledge and information. The ideal of "a scholar stays at home and is well known in the world" can be easily realized by clicking the mouse in the network environment. Not only that, the Internet has also strengthened people's freedom to obtain information, so that ordinary people, whether officials or senior officials, can express their opinions and talk equally on the Internet. No one on the internet knows that you are a dog. In addition, even in China, where the Great Electronic Wall is particularly powerful, people can still use technology to break through the restrictions and get the information they want. Before the advent of the internet, it was almost impossible to get information locked in the back garden and palace safes. The existence of a library is first of all a place that embodies knowledge fairness and information freedom, not just a place to borrow books and materials. With its publicity and non-profit, it breaks the information barrier formed by economy, race, political stance and religious belief, and provides individuals with a way to acquire extensive knowledge, ideas and opinions. For example, the Nanshan District Library in Shenzhen provides a place for migrant workers working in Shenzhen to read newspapers and study, so that they also have the freedom to acquire knowledge and information. In addition, the internet has brought convenience to some people, but it has also brought about a digital divide. In China, a country with the largest number of Internet users in the world, most people can't access the Internet. Even in the United States, where the Internet originated, and Europe, where social development and education are generally high, not every family has a computer, and everyone can use the Internet. In this case, in addition to the traditional services, the library also needs to provide network services and related training, so that users can use the network equally. Library and network are good partners, they learn from each other and promote each other. My friend asked me, "Now it seems that the internet is more convenient and faster, which greatly reduces the charm of public libraries." . Does this mean that public libraries will gradually decline in the information age? "In my opinion, the library has not declined, on the contrary, it has made progress. The service mode, service means and service level of the library have been improved and improved in the past decades, and its publicity has also expanded because of the network. Digital library, electronic full-text transmission, virtual reference and information technology enable library users to enjoy library services anytime and anywhere. Does this mean that the library is gradually declining? Perhaps there are fewer readers coming to the library (in fact, there is no decrease), but more users use the library through the network. What are the comparative advantages of libraries?