Diamond wire drawing die film is known as a new functional material in the 21st century. This is mainly because the diamond film has a hardness very close to that of natural diamond, high elastic modulus, low friction coefficient, extremely high thermal conductivity and high room temperature resistivity, excellent insulation and chemical stability, and high It has excellent performance such as electricity and hole mobility and transparency in a wide range of light waves, and it has wide application prospects in high-tech fields such as machinery, electricity, biomedicine, aerospace, and nuclear energy. Since the mid-1980s, in the upsurge of research and development of diamond thin films that have swept the ball, the excellent performance of diamond has attracted the investment of many scientists and technicians. From 1970, Soviet scholar Deryagin et al. used chemical vapor deposition (CVD) to convert graphite to diamond under low temperature and low pressure conditions. To the beginning of the 1980s, Japanese scholar Setaka et al. initially demonstrated in the study of chemical vapor deposition of diamond thin films. With the possibility of practical application, substantial progress was made in the early 1990s. This opens up a broader world for the further development and application of diamond thin film materials.