Bronchitis infected both lungs, coughing a lot should improve the examination to clarify the infectious agent, follow the doctor’s instructions to use antibiotics, such as cefixime, supplemented by cough expectorant drugs, such as dextromethorphan, etc. symptomatic cough. 1. Improve the relevant examination: bronchitis exists in the infection of both lungs, coughing, should improve the chest X-ray or chest CT examination to see whether the development of lung inflammation, or the existence of other diseases such as tuberculosis. Also improve sputum culture to clarify the pathogen, as well as blood routine, Mycoplasma pneumoniae test to understand the condition, under the guidance of the doctor targeted medication. 2. Antibiotics: If it is clear that there is a bacterial infection, you can use cefixime, levofloxacin and other antibiotics to fight infection, and if there is a Mycoplasma pneumoniae infection, you can use azithromycin and other anti-infective treatment. 3. Cough suppressing and expectorant: If coughing is obvious, cough suppressants such as dextromethorphan can be used to relieve the symptoms, and if sputum is not easy to cough up, aminoglutethimide hydrochloride can be used to promote sputum expulsion. In addition, we need to be vigilant against tuberculosis, viral pneumonia, fungal pneumonia and other diseases, the above drugs need to be used in accordance with the doctor’s instructions, bronchitis need to be reasonable treatment under the guidance of a doctor, so as to avoid delaying the condition.