The life expectancy of COPD cannot be generalized, its prognosis is related to the underlying disease, life habits, the number of acute exacerbations, the presence of complications and so on. 1. Underlying disease: patients with other underlying diseases, such as diabetes, hypertension, such as poor control of the underlying diseases will affect the prognosis. 2. Lifestyle habits: such patients need to quit smoking if they are smokers, ensure a regular routine, and stay away from polluted environments. 3. The number of acute exacerbations: infection is a common cause of acute exacerbation of COPD. Reducing the number of acute exacerbations can significantly improve the prognosis of patients, so it is necessary to prevent acute exacerbations, such as avoiding fatigue, cold and so on. 4. Complications: patients with chronic obstructive pulmonary disease (COPD) may be complicated by pulmonary heart disease at a later stage, which may easily lead to cardiac insufficiency, and the prognosis of such patients is not good. It should be noted that COPD can be improved through “early detection, early diagnosis, early treatment” to improve the prognosis and reduce the adverse effects of the disease, it is recommended to follow the doctor’s instructions for the use of drugs.