Bronchiectasis is caused by chronic inflammation and fibrosis of the bronchi and surrounding lung tissue, resulting in deformation and dilatation of the bronchi. It can occur at any age, and typical symptoms of bronchiectasis include cough, coughing up thick sputum, and recurrent hemoptysis. Most patients have a history of tuberculosis, pulmonary fibrosis, or bronchopneumonia in their early childhood. 90% of patients have hemoptysis of varying degrees, and often have night sweats, weakness, weakness, and loss of appetite. The symptoms of pulmonary heart disease and cardiopulmonary failure may appear in the late stage, which shows that bronchiectasis poses a great threat to our health and should be controlled by the principle of early detection, early diagnosis and early treatment. Prevention in daily life is also particularly important, so how should we prevent it? 1, diet and health to develop good eating habits, usually eat more food containing high protein and high vitamin, eat less cold food, pay attention to the diet is light. Do a good job of oral cleaning, so as to avoid “disease from the mouth” caused by respiratory infections, which can effectively improve the immune function of the body to prevent the occurrence of bronchiectasis. 2, adhere to exercise Patients can choose the appropriate exercise according to their age and the amount of exercise, such as walking, jogging and other light aerobic exercise, the intensity of the exercise or avoid it, too strenuous exercise will cause the trachea wall rupture, causing bleeding, so as not to cause unnecessary damage to the body. 3, pay attention to weather changes When it is cold, add clothing in a timely manner, pay attention to warmth, avoid cold and cold, cold is often a factor of respiratory tract infections. Try not to go out in foggy weather, and wait for the weather to improve and the air to be fresh before going out. When you go out, you should pay attention to wear a mask and do a good job of personal protection.