Bronchitis can be divided into acute bronchitis and chronic bronchitis. Acute bronchitis is mainly treated with cough suppressants, antibiotics, antipyretic and analgesic drugs, etc. Chronic bronchitis is mainly treated with expectorant drugs, asthma medicines, etc., and acute exacerbation can be treated with antibiotics against infection. 1. Acute bronchitis: mainly symptomatic treatment. Patients with body temperature over 38.5℃ can use antipyretic and analgesic drugs such as ibuprofen to reduce fever; patients with severe dry cough can use dextromethorphan to suppress cough; if there is a basis for bacterial infection, macrolides such as azithromycin, cephalosporins such as cefixime, quinolones such as levofloxacin can be used empirically for anti-infective treatment. 2. Chronic bronchitis: in the stabilized period, smoking cessation and avoidance of infection are the main focus. Cough cough sputum more, can use bromhexine, ambroxol and other expectorants, if accompanied by wheezing, can also use aminophylline and other antispasmodic asthma drugs. Acute exacerbation of chronic bronchitis, can be combined with the local epidemiology or drug sensitivity test selection of antimicrobial drugs such as levofloxacin, cefuroxime, etc.. Bronchitis patients do not abuse their own drugs, need to follow the doctor’s instructions according to the actual condition of the individual standardized medication.