Idiopathic pulmonary fibrosis is a chronic progressive, fibrotic form of interstitial pneumonia in which no cause can be found for widespread pulmonary fibrotic changes, confined to the lungs. The cause of this disease is unknown, but it is more common in men than women and has a slow, unrecognizable onset. The main symptoms are a dry cough and progressive dyspnea, usually occurring after activity, and patients experience weight loss, easy fatigue, general malaise, and muscle and joint pain. The lungs have characteristic changes such as honeycomb lung, and lung function declines severely, making end-stage patients very distressed. Possible causes of idiopathic pulmonary fibrosis include: long-term heavy smoking, genetic inheritance, chronic viral infections, environmental exposures such as long-term exposure to metal dust, wood dust, stone dust, livestock, plant dust, agricultural dust, etc., and gastroesophageal reflux, which can cause alveolar epithelial cell damage and release a variety of cytokines, leading to conversion of alveolar epithelial cells to extracellular matrix, fibroblast proliferation, and The pathological changes are irreversible and the goal of treatment is to control symptoms and reduce future risk, relieve symptoms, improve the patient’s quality of life, and delay disease progression with the goal of prolonging the patient’s survival.