Current medical advances and technological developments have led to the emergence of new imaging methods. The complete replacement of film for digital image display terminals is an inevitable trend in the development of x-ray diagnostic technology. x-ray digital chest radiographs, CT, MRI, SPECT, and PET/CT are or have been used for pneumoconiosis. As we know, the traditional X-ray imaging is to make the X-ray through the human body projected on the film sandwiched between the two sides of the sensing screen, the image is an analog signal, the image information can only be recorded on the film, the image is real, can not be modified; CR, DR, CT, and other modern X-ray imaging technology has been digitized images. The basic principle is that the detector accepts X-rays through the human body, which will be transformed into visible light, and then transformed into electrical signals by the photoelectric converter, and then transformed into digital by the analog/digital converter, and input into the computer for processing, and then finally by the digital/analog converter to each digital to different shades of gray from black to white images, this image can be adjusted and modified according to the diagnostic needs of human beings, compared with the traditional chest radiographs show great This image can be adjusted and modified according to the diagnostic needs, showing great superiority over the traditional chest film. Why don’t we use digital chest film as the standard film for diagnosis of pneumoconiosis nowadays? 1. The diagnosis of pneumoconiosis is not purely a medical diagnosis, but a disease diagnosis involving work injury, disability assessment and relevant laws. Since the discovery of X-ray more than 100 years ago, the traditional analog signal chest film (i.e. pneumoconiosis high-kilovoltage chest film) has been the most orthodox and major tool for the detection and diagnosis of pneumoconiosis. The ILO classification of pneumoconiosis, which was originally designed for use in epidemiological studies of pneumoconiosis, uses analog chest radiographs and is now used as the primary objective basis for clinical and workers’ compensation claims. 2. The low cost and availability of high-kilovolt chest x-ray and the wide recognition of the ILO classification are still the main tools for diagnosis, follow-up and screening of pneumoconiosis among dusty workers and epidemiological studies worldwide. China’s revised diagnostic standard for pneumoconiosis, which was implemented on November 1, 2009, also clearly stipulates that the traditional high-kilovoltage chest X-ray must be used as the standard film for pneumoconiosis examination and diagnosis. 3. At present, there is no unified digital chest radiograph imaging technical parameter in China, and there is no unified digital pneumoconiosis diagnostic standard film, and everything is still under research and discussion.