Before explaining what silicosis is, we need to know what pneumoconiosis is, pneumoconiosis is a systemic disease caused by long-term inhalation of productive dust in occupational activities with diffuse fibrosis of lung tissue as the main cause of pneumoconiosis is the so-called inhalation dust with a diameter of less than 10 microns that can reach the deeper part of the whistle, silica-forming silica dust can cause pulmonary fibrosis is called silicosis. Silica dust formed by silica causes pulmonary fibrosis, and the occurrence and extent of the lesion are closely related to the amount of silica dust accumulation in the lungs. The higher the concentration of silica dust, the greater the dispersion, the longer the exposure to silica dust, and the poorer the protective measures, the greater the amount of silica dust inhaled and accumulated in the lungs, and the more likely silicosis will occur, and the more serious the condition. Although silica dust is the most powerful substance that causes lung fibrosis, other dusts, such as coal dust, asbestos dust, and carbon black dust, can also cause pneumoconiosis, but these dusts have a weaker capacity for self-fibrosis and a longer latency period for pneumoconiosis. The main cause of silicosis is the long-term inhalation of free silica, so it can be prevented, but the treatment is very difficult, there is no special treatment, mainly to take comprehensive measures to slow down the progress of the disease.