Ultra-precision processing technology is an advanced manufacturing technology developed to meet the needs of modern high-tech. It is an indispensable key technology in the development of high-tech cutting-edge products. It is an important symbol of a country's manufacturing level, and it is the foundation and key of advanced manufacturing technology. It is also one of the indispensable key technologies for equipment modernization, and has a very broad application prospect in military and civilian industries. Diamond ultra-precision cutting technology is one of the earliest and most widely used technologies in the development of ultra-precision processing technology.