Chronic obstructive pulmonary disease (COPD) mainly includes chronic bronchitis and obstructive emphysema, and is characterized by chronic cough, coughing, shortness of breath or dyspnea, wheezing and chest tightness. Since 2002, the Global COPD Initiative (GOLD) has been recognizing the third Wednesday of November as “World COPD Day”. A common cold can make COPD patients “worse”, and elderly patients are more likely to have acute recurrent attacks, so 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 partial pressure of arterial oxygen reaches at least 60 mmHg to obtain better results. The effect of oxygen therapy is better. Oxygen therapy at night can prevent nocturnal hypoxemia and reduce the rate of sudden death at night in COPD patients. 2. Daily walking exercise: walk at a uniform pace on a flat road for at least 30 minutes each time, no less than 5 times a week, and the pace should be gradual. 3.Adhere to the respiratory gymnastics: mainly abdominal breathing and lip reduction breathing. Abdominal breathing: the patient’s hands are placed on the front chest and abdomen, try to inhale through the nose, while holding the abdomen, exhale through the mouth, while closing the abdomen. Lip shrink breathing: when breathing, the lips are shrunken like whistling, so that the exhaled gas is slowly exhaled through the narrowed mouth shape, generally the time used for exhalation is longer than inhalation. 4, scientific diet: COPD patients in winter diet should do insulation, cold, dry. Eat foods rich in high-quality protein are meat, eggs, fish and soy products. People who are especially afraid of cold can add more root blocks 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 beneficial to the discharge of phlegm and the smooth flow of the respiratory tract. Especially in winter, the use of air conditioning, heating, indoor air is particularly dry, you can use humidifiers, air cleaners, also use wet towels and other methods to increase indoor humidity. 6, quit smoking, strengthen the disease understanding, etc. To maintain a good state of mind as a principle, strengthen self-protection, pay attention to cold and warmth, prevent colds, and avoid long-term stay in a polluted environment. 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 to have a pulmonary function test for COPD diagnosis.