Chronic bronchitis treatment is mainly drug therapy, commonly used drugs, including anti-infective drugs, cough expectorant drugs, asthma drugs and immunomodulators, etc., patients should follow the doctor’s instructions for medication. 1. Anti-infective drugs: there are clear symptoms of infection, doctors often choose antibiotics based on the location of the patient’s common pathogens, commonly used drugs are levofloxacin, amoxicillin, cefuroxime and so on. 2. Cough expectorants: patients with dry cough can use cough suppressants, such as dextromethorphan or its combination. 3. Asthma medication: bronchodilators such as aminophylline and theophylline controlled release agent can be added for those with asthma. 4. Immunomodulators: for patients with recurrent respiratory infections, immunomodulators such as BCG polysaccharide ribonucleic acid and thymosin can be used. Chronic bronchitis patients should pay attention to the diet should be light, supplemented with sufficient vitamins, high-quality protein, such as milk, eggs and so on. Patients usually drink more warm water, which can make sputum dilute and easy to cough out. Patients should actively cooperate with the doctor’s treatment, do not blindly treat themselves, so as not to delay the condition or adverse reactions.