Symptoms of idiopathic pulmonary fibrosis include active dyspnea, dry cough, malaise and fatigue, and weight loss. Idiopathic pulmonary fibrosis is a chronic, progressive, fibrotic interstitial pneumonia with an unclear etiology that occurs in the elderly, with risk factors including smoking and long-term exposure to metal dust and wood dust. It usually develops after the age of 50, with an insidious onset, and is characterized by active dyspnea, progressive exacerbation, and often accompanied by a dry cough. Systemic symptoms are not obvious, there can be discomfort and fatigue and weight loss, but rarely fever. 75% of the patients have a history of smoking, about half of the patients can be seen pestle finger, 90% of the patients can be detected in the base of the lungs at the end of the inhalation of the small Velcro rales. In the advanced stages of the disease, cyanosis, pulmonary hypertension and signs of right heart insufficiency may be evident, as evidenced by cyanosis of the lips, shortness of breath, dyspnea, and chest pain. It is recommended that the diagnosis of idiopathic pulmonary fibrosis be treated aggressively, and the decline in lung function can be slowed down by antifibrotic drugs such as pirfenidone.