Pneumoconiosis can be ruled out for the time being if no abnormality is found in the CT results. However, if there is a history of long-term exposure to industrial dust, due to the type of dust or differences in protection, some pneumoconiosis can occur less than one year after exposure to dust, and in slow cases, pneumoconiosis can occur for more than ten years or even decades, and regular checkups are needed. Pneumoconiosis is the abbreviation of pneumoconiosis, which is a common occupational disease caused by long-term inhalation of hazardous dusts, such as silica dust and asbestos dust, etc., which are deposited in the lungs, resulting in dust nodules and pulmonary fibrosis as the main lesions, and is commonly found in coal miners, asbestos processing workers and other groups. At present, the diagnosis of pneumoconiosis is mainly based on the performance of chest X-ray, and there is no CT diagnostic standard for pneumoconiosis. Compared with chest X-ray, chest CT, especially high-resolution CT, has higher sensitivity and is more advantageous in detecting small round shadows with a diameter of <1.5mm. It is more likely to detect large shadows located behind the heart and mediastinum, in the spine or paramediastinum, as well as small fused shadows at the lung apices or behind the clavicle. If no abnormality is found on chest CT, pneumoconiosis can be ruled out for the time being. However, if it is in the very early stages, a normal CT may be present, and those with high risk factors need to be reviewed regularly. When engaging in occupations with high risk of pneumoconiosis, one should improve the health examination regularly and go to regular hospitals for treatment if any abnormality is found.