There is no such thing as a specialized medicine for chronic bronchitis, which is mainly treated with anti-infectives, medicines for coughs, and asthma medicines, such as levofloxacin, dextromethorphan, and aminophylline. 1. Anti-infective drugs: For patients with infection, anti-infective drugs can be selected according to the pathogenic bacteria through drug sensitivity test. Commonly used drugs include levofloxacin, amoxicillin, cefuroxime and so on. 2. Cough and phlegm medicines: long-term, repeated, gradually aggravated cough is a main feature of chronic bronchitis, the more commonly used drugs are compound licorice, bromhexine, aminoglutethimide hydrochloride. Patients with mainly dry cough can use cough suppressants, such as dextromethorphan or its combination. 3. Asthma medication: some patients may experience bronchospasm, and drugs such as aminophylline and theophylline controlled release can be considered. The above drugs are for reference only, and specific dosage should follow the doctor’s instructions. After the diagnosis of chronic bronchitis, you should consult a doctor in time, follow the doctor’s instructions for scientific and reasonable treatment, not blindly use their own medicine.