Chronic Obstructive Pulmonary Disease (COPD) mainly includes chronic bronchitis and obstructive emphysema, and clinically manifests itself in chronic cough, sputum, shortness of breath or dyspnea, wheezing and chest tightness, etc. The prevalence and death rate of COPD are high, and due to the progressive decline in lung function, it seriously affects the labor force and quality of life of the patients. Since 2002, the Global Organization for the Prevention of COPD (GOLD) has been advocating for the designation of a World Day on the third Wednesday of November each year. A common cold will make COPD patients “worse”, and elderly patients are more likely to have acute recurrent episodes, so the advent of winter, the prevention and treatment of COPD should pay attention to the following aspects: 1, long-term oxygen therapy: oxygen should be inhaled for at least 14 hours a day, so that the arterial partial pressure of blood oxygen to reach at least 60mmHg in order to obtain a better oxygen therapy results. The effect of oxygen therapy. Oxygen therapy at night can prevent nocturnal hypoxemia and reduce the rate of sudden death at night in patients with COPD. 2, daily walking exercise: walking at a constant speed on level roads, with a cumulative exercise time of at least 30 minutes each time, no less than 5 times a week, and the pace should be gradual. 3, adherence to respiratory gymnastics: mainly abdominal respiration and lip-contracted breathing. Abdominal breathing: the patient’s hands were placed on the chest and abdomen, as far as possible with the nose inhalation, at the same time, the belly, exhale with the mouth, at the same time, the abdomen. Lip-contracted breathing: When breathing, the lips will be like whistling, so that the exhaled gas is slowly exhaled through the narrowed mouth, and the time spent on exhalation is generally longer than inhalation. 4, scientific diet: COPD patients’ diet in winter should be to achieve heat preservation, cold, and prevent dryness. Eat foods rich in high quality protein such as meat, eggs, fish and soy products. People who are especially afraid of the cold can add more root pieces and root vegetables, such as carrots, roots and potatoes. Vitamin B2 and vitamin C from the diet is also very necessary. 5, pay attention to the environment: to maintain a constant temperature and humidity in the room is conducive to the discharge of phlegm and the smooth flow of the respiratory tract. Especially in the winter air conditioning, heating use, indoor air is particularly dry, you can use a humidifier, air cleaner, can also use wet towels and other methods to increase the indoor humidity. 6, quit smoking, strengthen the understanding of the disease in order to maintain a good state of mind as the principle of strengthening self-protection, pay attention to the cold and warmth, prevent colds and flu, and to avoid staying in the polluted environment for a long time. To learn more about COPD, and pay attention to weather changes, avoid infection and quit smoking. If you have some symptoms of COPD, you should go to the hospital in time and do lung function test for COPD diagnosis.