Bronchiectasis is a chronic purulent bronchial disease, with chronic coughing, coughing up large amounts of pus and hemoptysis, often with pestle-like fingers and toes in severe cases. Some patients only show repeated hemoptysis, which is known as dry bronchiectasis. x-ray chest radiographs mostly show thickened lung texture, and severe cystic bronchiectasis may have specific changes such as curly shadow or multiple short liquid level. thin layer CT and bronchiectasis can confirm the diagnosis, and generally antibiotics and hemostatic drugs are used for treatment. Because many patients, especially elderly patients, can develop immediately after cold, especially in the cold season, and every time winter comes, patients with bronchial expansion will gradually become nervous. Therefore, in the autumn when it is still warm at the beginning of the year and the climate is changing, how to prevent disease, improve the body’s resistance and spend the winter safely is a problem that cannot be ignored. Here are some notes on how to prevent and control: 1. According to clinical observation, 95% of acute attacks of bronchial dilatation are induced by cold and aggravated by cold. Therefore, it is advisable to live in a warm and sunny place, and pay attention to warmth in cold weather to avoid catching cold. 2, smoking is closely related to the onset, recurrence and aggravation of bronchial dilatation, and drinking alcohol can reduce the defense function of the respiratory tract, so patients with bronchial dilatation should quit smoking and avoid contact with smoke and irritating gases. 3, when the amount of sputum is large, it is advisable to take postural drainage (such as the head-low foot-high position or listen to the physician’s guidance if the lesion bronchus is in the lower lobe). If there is only blood in the sputum or a small amount of hemoptysis, rest and oral treatment such as Anluo Blood and Yunnan Baiyao to stop bleeding, stop coughing and resolve phlegm and anti-inflammation should be taken. If you have a moderate or large amount of hemoptysis, you should be hospitalized promptly and pay attention to coughing out the blood, and do not hold your cough to cause airway obstruction leading to atelectasis or asphyxia. 5. Antibacterial drugs should be used under the guidance of a physician and not abused or used for a long time. 6. You should pay attention to rest, go to bed early and get up early, and do appropriate outdoor activities to adapt your upper respiratory tract to the cold air. According to your age and physical condition, you can choose to walk, jog, play tai chi, practice qigong, etc. You can also do some chest expansion and deep breathing exercises outdoors to increase lung capacity to enhance the body’s physical strength and immunity. 7, eat more eggs, meat, fish, milk and fresh vegetables, fruits and vegetables. 8, before the winter injection of nuclear complex, microcard, bronchitis vaccine can play a role in preventing respiratory infections. In addition, taking the rehabilitation punch containing ingredients such as astragalus and gynostemma can improve the body’s immune function, which is helpful in preventing the onset of bronchial expansion.