1, Quit smoking: Patients with chronic bronchitis should not only quit smoking first, but also avoid passive smoking because of the chemicals in smoke, such as tar, nicotine and cyanohydrogen acid. , can act on autonomic nerves, causing bronchospasm, thereby increasing respiratory resistance; In addition, it can also damage the epithelial cells and cilia of bronchial mucosa, increase the secretion of bronchial mucosa, reduce the purification function of lung, easily cause the proliferation of pathogenic bacteria in lung and bronchus, and lead to chronic bronchitis.

2, pay attention to keep warm: in the cold season, patients should pay attention to keep warm and avoid catching cold, because cold can reduce the bronchial defense function on the one hand, on the other hand, it can reflexively cause bronchial smooth muscle contraction, mucosal blood circulation disorder and secretion discharge obstruction, and secondary infection can occur.

3. Strengthen exercise: Patients with chronic bronchitis should take appropriate physical exercise in remission to improve their immunity and reserve capacity of heart and lungs.

4, prevent colds: pay attention to personal protection, prevent colds, and those who have the conditions can do cold-resistant exercise to prevent colds.