Chronic obstructive pulmonary disease is a chronic disease that cannot be cured. As the number of acute exacerbations increases, lung function gradually decreases, shortness of breath increases, and even it is difficult to put on and take off clothes, brush teeth and wash face. Therefore, you need to pay attention to the prevention of acute exacerbations in normal times, to do: First: prevent colds, enhance the body’s immunity. Proper exercise, strengthen nutrition, can be vaccinated against influenza in late autumn, you can also eat some immunity-enhancing drugs, such as thymidine, transfer factor, Chinese medicine Yu Ping Feng pill, etc. Second: Take medication on time. The treatment of chronic obstructive pulmonary disease is not only hospital treatment, but also the usual maintenance treatment at home, so as to slow down the progress of the disease. Third: Regular review. Regular review at the hospital is needed to adjust medication to achieve the best control effect using the lowest dose of medication. Fourth: breathing exercises. Such as abdominal breathing, lip contraction breathing, you can also choose taijiquan, qigong, etc. according to your situation. Fifth: Oxygen intake. In case of type 2 respiratory failure, low-flow oxygen inhalation is required. The duration of oxygen inhalation should generally be greater than 15 hours per day.