Pneumoconiosis is a very common type of occupational disease clinically, often caused by long-term inhalation of large amounts of dust in the environment, leading to a chronic lung disease. When pneumoconiosis progresses to a certain extent, it inevitably leads to fibrotic changes in the lungs. At this stage, the disease can potentially cause pulmonary tuberculosis. Therefore, in clinical practice, the diagnosis of tuberculosis is often made by finding Mycobacterium tuberculosis in the sputum, as well as through chest CT or X-ray examinations for a clear diagnosis. Generally, pneumoconiosis tuberculosis is contagious if Mycobacterium tuberculosis can be found in the sputum. If the bacterium is not found in the sputum of pneumoconiosis tuberculosis patients, it is not contagious. Therefore, whether pneumoconiosis tuberculosis is contagious or not can only be determined based on some of the patient's test results.