Pulmonary fibrosis is the process of fibrosis of the interstitial lung, after fibrosis, lung function and respiratory function will be affected, first of all, there will be hypoxia, then respiratory failure or even comorbidities or complications and adverse outcomes, which may lead to death. There is no specific treatment in Western medicine. Traditionally, Western medicine believes that the prognosis of pulmonary fibrosis is improved with hormones or lung transplantation, which has greater side effects, and lung transplantation is unlikely to achieve a cure, and pulmonary fibrosis is a problem for Western medicine. In Chinese medicine, pulmonary fibrosis is considered to belong to the category of pulmonary impotence, and pulmonary impotence is identified as a deficiency in Chinese medicine, based on Qi deficiency or Yin deficiency, there may be phlegm and blood stasis. The prognosis of pulmonary fibrosis can be improved by using phlegm-boosting or blood-boosting drugs to alleviate the patient’s symptoms and give the patient a higher quality of life. The cause of pulmonary fibrosis is not very certain, but most of it is related to immune factors. Although Western medicine is not too good now, Chinese medicine still has advantages in the treatment of pulmonary fibrosis.