Patients with emphysema generally do not affect their life expectancy if they are treated in a timely manner. Emphysema can be roughly divided into three grades: mild, moderate and severe according to the degree of lung function impairment. Mild pulmonary impairment means that the maximum expiratory volume is less than 70%, moderate pulmonary impairment means that the maximum expiratory volume is 50%-60%, and severe pulmonary impairment means that the maximum expiratory volume is less than 50%, and if the maximum respiratory volume is less than 20%, respiratory failure may be life-threatening. At present, the treatment of emphysema mainly includes antibiotics, bronchodilators, oxygen therapy, physical therapy, etc. Therefore, once the disease of emphysema appears, it is necessary to go to a regular hospital to receive standardized treatment as soon as possible to avoid missing the best time for treatment.