Pulmonary fibrosis is a major disease. Pulmonary fibrosis can lead to decreased lung function, respiratory failure, and ultimately death, but further progression can be avoided if the patient has a limited amount of pulmonary fibrosis and the cause of the pulmonary fibrosis is removed in time. Pulmonary fibrosis is the final stage in the development of many lung diseases, and there is still a lack of effective treatment, so the prognosis is poor. Most patients show a gradual decline in lung function, which can eventually lead to death due to respiratory failure, a major disease. However, some patients have a clear cause of pulmonary fibrosis, such as inhalation of dust, allergic pneumonia, pneumoconiosis, use of drugs such as amiodarone, radiotherapy, rheumatoid arthritis, heredity, age and smoking. Therefore, if the continuous effect of the cause on the organism is terminated in time, such as avoiding exposure to dust and discontinuing the use of drugs such as amiodarone, then further deterioration of the disease can be avoided. If you are diagnosed with pulmonary fibrosis, please stay positive and actively cooperate with your doctor for treatment.