Dry cough without sputum caused by bronchitis can be treated with dextromethorphan and other drugs to suppress cough, and anti-infective treatment can be given if necessary. At the same time, it is necessary to maintain a good lifestyle. 1. Cough suppressant treatment: For coughs that are mainly dry, dextromethorphan, pentoxyverine and other drugs can be used to suppress the cough. 2. Anti-infection treatment: if there is a basis for bacterial infection, you can use amoxicillin, cefixime and other drugs anti-infection treatment; if caused by mycoplasma, chlamydia infection, you can use macrolide antibiotics such as azithromycin and other drugs; such as caused by viral infections, you can use oseltamivir, acyclovir and other antiviral drugs treatment. 3. Good lifestyle: drink plenty of water, eat a healthy diet, rest, avoid exertion, and keep warm. Dry cough without sputum can also be caused by other diseases. If the symptoms are not relieved or worsened, you should go to the hospital for further examination and follow the doctor’s instructions for relevant treatment.