Over 70 years old patients with moderate chronic obstructive pulmonary disease how long can live is usually not certain, this is mainly related to the length of the patient’s medical history, as well as standardized treatment of the degree of stability of disease control, etc., chronic obstructive pulmonary disease can be well controlled if you can live to a natural age is also possible, poor control of serious complications at any time there is a risk of death. 1. If the patient’s lung function is moderate, and standardized treatment is carried out to reduce the frequency of acute exacerbations of moderate COPD, and is not accompanied by underlying diseases, it generally does not have too great an impact on the survival period, and it is possible to live to a natural age. 2. If the patient does not have standardized treatment, the patient’s condition may acutely aggravate, leading to respiratory failure, pulmonary heart disease, pulmonary encephalopathy and other complications, which may be life-threatening at any time. Patients in their 70s with moderate chronic obstructive pulmonary disease need to actively standardize treatment, quit smoking and drinking, and eat properly. If necessary, consult a doctor in time.