Chronic bronchitis can be clinically diagnosed based on the length of the patient’s cough. Coughing for three months a year, coughing and coughing up sputum and other symptoms occurring for more than two consecutive years, especially seen in long-term smokers, can be clinically diagnosed as chronic bronchitis. After chest imaging, chest CT can indicate increased and thickened texture of both lungs, which can confirm the diagnosis of chronic bronchitis. After the diagnosis of chronic bronchitis, patients need to be advised to quit smoking, enhance outdoor exercise, physical exercise, and if accompanied by respiratory distress can be given home long-term oxygen therapy to effectively improve lung function. Chronic bronchitis can be cured by giving early smoking cessation, enhancing physical exercise, protecting lung function, and giving lung-clearing, lung-moistening, and lung-supplementing drugs in the diet. Minimize the attacks in the winter and spring of each year when the climate changes, effectively protect lung function, when as chronic bronchitis already belongs to the clinical cure, after chest imaging, mainly to exclude whether there is a combination of other diseases.