“Cover in spring and freeze in autumn” is a health care proverbs, is to advise people not to rush to take off the cotton clothes in the spring, the fall also do not just see the cold on the wear too much, appropriate cover a little bit or freeze a little bit, for the health of the body is good. Because our country in the same latitude in the spring (autumn) temperature rise (fall) the most rapid, so the birth of the “spring cover autumn freeze” health proverb. In spring, the natural temperature is in the rising stage, but there is a temperature difference between indoor and outdoor. There are 3-5 ° C, from the warmth of the sun into the cool indoors, the elderly and the sick need to add clothing in the spring, in order to avoid cold and disease. Autumn temperatures are in the falling stage, the indoor temperature is higher than the outdoor, from the outdoor into the indoor, the temperature rises, naturally need to undress autumn “frozen”, to avoid sweating and cold. Liang Siwei, Department of Respiratory Medicine, Shanghai Tongji Hospital Chronic Obstructive Pulmonary Disease (COPD) and bronchial asthma (referred to as “asthma”) are common respiratory airway diseases. Both of them may have similar clinical manifestations, such as cough, sputum, shortness of breath and chest tightness. Temperature change is often an important factor that triggers wheezing. Many old patients laugh at themselves as “weather forecasters”, as long as the temperature difference is big, it can cause wheezing, coughing, coughing and sputum symptoms worsen. Therefore, COPD, asthma patients should pay more attention to temperature changes. “Spring and fall frost” should also vary from person to person. “Autumn frost” is to slowly improve people’s tolerance to the gradually cold environment, but if the individual’s constitution is very weak, it is still appropriate to keep warm. If you catch a cold, it can aggravate the symptoms of COPD and asthma, such as coughing, sputum and wheezing. Even for healthy people, “autumn frost” is also conditional. Generally in the sunshine temperature of 15 ℃ -20 ℃, people can reduce the appropriate clothing, but near the beginning of winter, still to keep warm.