The art of ancient book restoration has a long history in Chinese history. As early as the Spring and Autumn Period and the Warring States Period, there were traces of modification and patching on silk. This is the earliest prototype of the art of ancient book restoration. In Bei Wei's "Qimin Yaoshu", there are written records of the restoration of ancient books and paintings. In the Tang Dynasty, with the separation of calligraphy and painting, their own binding forms were formed, and the restoration of ancient books became an independent technology. The development of printing technology in the Song Dynasty entered a period of rapid development, and the art of ancient book restoration became more mature. From the late Qing Dynasty to the Republic of China, due to China's vast territory, differences in natural geographical conditions and humanistic environment, the country formed many schools of ancient book restoration skills, such as the Shanghai School, the Su School, the Yang School, the Beijing School, the Shu School, the Hui School, the Lingnan School, the Lu School, and the Tianjin School, each with its own strengths and complementing each other. The art of ancient book restoration was born with the birth of ancient books and developed with the development of ancient books. Its technical process can be roughly divided into several steps, such as testing, paper matching, paste adjustment, book disassembly, repair, and binding. The entire restoration process must strictly follow the working principles of "restoring the old as it was" and "reversibility" from beginning to end, striving to keep the restored books in their original appearance and ensure that the data value and cultural relic value of the books are not damaged by the restoration. Through traditional restoration of ancient books, the treasures of documents from past dynasties can be preserved and restored to their original historical appearance, which plays an important role in extending the life of paper cultural relics and protecting cultural heritage. At the same time, ancient book restoration is not only a practical technology, but also has a high degree of artistry. The skills and movements handed down from the era of ancient book restoration are highly ornamental, and the binding of restored ancient books also has a high aesthetic value.