The traditional Chinese bronze restoration and reproduction technology appeared two thousand years ago and has continued to exist. During the Ming and Qing dynasties, ancient bronzes were imitated on a large scale. At this time, the traditional Chinese bronze restoration industry established four major schools: Beijing School, Xi'an School, Suzhou School and Weifang School. Among them, the Beijing School had a relatively large influence, and a group of famous teachers and students appeared one after another, and they were technically independent. In 1952, bronze restoration experts headed by Zhao Zhenmao of the Beijing School entered the Palace Museum and began to use traditional techniques to restore and reproduce bronze cultural relics. These experts also include Zhao Tongren, Li Huisheng, Meng Haiquan, Jing Dequan, Gu Dewang, Zhang Juru and other heirs of the Beijing School who have been engaged in bronze restoration and reproduction for a long time. Over the past few decades, these experts have restored and reproduced thousands of bronze cultural relics of various types, making important contributions to the protection and restoration of cultural relics in my country. Traditional bronze restoration technology mainly includes shaping, splicing, patching, bonding (welding), reinforcement, aging and other processes, and sometimes also involves rust removal, hot wax (surface sealing) and other work. Traditional bronze reproduction technology includes processes such as mold making, mold casting, engraving patterns, and polishing and aging. Each process has high technical difficulty. At present, the professionals engaged in traditional bronze restoration are aging, and further inheritance faces difficulties. In the context of the rapid development of modern science and technology, it is imperative to scientifically summarize traditional crafts, including traditional bronze restoration and reproduction technology.