The staff of the paper-based cultural relics restoration room of the Cultural Relics Science and Technology Protection Center of the Anhui Museum restored the ancient books and cultural relics. In order to access ancient books and documents, we need to travel to various places and visit various libraries - this is the common memory of many ancient book researchers. In the digital age, this situation is changing. The National Library (National Ancient Books Protection Center) and other six units recently released 6786 digital resources of ancient books online. So far, 130000 pieces of digital resources of ancient books have been released online. Relying on digital means, voluminous ancient books go out of the "boudoir pavilion" and make civilization within reach. Both "collection" and "use" of ancient books must be protected as cultural relics and used by readers as documents. It has always been the focus of the protection of ancient books to give consideration to "collection" and "use", and digitalization is the best method. The digitization of Chinese ancient books began in the 1990s. With the continuous maturity of digital technology, scientific and technological empowerment of ancient books has made gratifying progress. "In 2016, the National Library set up a 'Chinese ancient book resource database' platform, released digital resources such as ordinary ancient books, oracle bones, and Dunhuang documents, and all of them realized log-on-free online reading." Nan Jiangtao, an associate researcher of the National Library, said that the National Library also released "Dunhuang Relics in French Collection", "Ancient Books of Tianjin Library", and "Ancient Books of Yunnan Library" in cooperation with domestic and foreign collection institutions, The framework of "National Ancient Books Digital Platform" has been basically built. With the in-depth development of the "Chinese ancient book protection plan", libraries around the country have successively invested human and material resources to vigorously promote the digitization of ancient books. The National Library has jointly released digital ancient books with 39 units. January 4 is the seventh joint release, which includes not only Ming and Qing engraving, but also inscription rubbings and other characteristic resources. Relevant data show that more than 102000 of the existing 130000 digital ancient books belong to the "Chinese ancient book resource database". "The digital resources of 130000 ancient books (pieces) are particularly valuable for our researchers." Yang Haizheng, a professor of the Chinese Department of Peking University, lamented that online access saved the time of commuting to and from the library, balancing the cultural relics and documentation of ancient books. AI helps the collation of ancient books to transform paper ancient books into digital texts, which is only the first step in the protection of ancient books. "Most of the existing digital ancient books are converted from microfilm, with low resolution and inconvenient to use." Yang Haizheng explained for example that such ancient books usually do not have the retrieval function. If you want to view a certain content, you need to read the original text page by page, which is difficult to find the desired knowledge quickly. The rapid development of artificial intelligence has brought revolutionary changes to the sorting and classification of digital ancient books. In October 2022, the digital ancient book platform "Reading Classic Ancient Books" jointly developed by ByteDance and the Digital Humanities Research Center of Peking University is a vivid case. Entering the website of "Recognizing Classic Ancient Books", the reporter saw the "Book of Changes", "Zuo Zhuan" and "Book of Rites" displayed on the front page. Open a book at random. The left side is the chapter directory, and the right side is the text. The typesetting format not only conforms to the reading habits of modern people, but also