Bronchitis is mainly caused by infection, and the main pathogenic bacteria that lead to the development of bronchitis include bacteria, viruses, mycoplasma, chlamydia, etc. For patients with bacterial, mycoplasma, and chlamydial infections, azithromycin, one of the macrolide antibiotics, can be chosen to control the infection. This drug is more effective against the above-mentioned pathogens, and at the same time, active symptomatic treatment and cough-suppressing and phlegm-removing drugs are chosen. If the application of azithromycin in the process of more obvious gastrointestinal symptoms and palpitations and other manifestations, you need to promptly adjust the medication, because there is this series of adverse reactions to azithromycin. If the patient’s symptoms do not improve significantly after about 3 days of azithromycin use, a sensitive antibiotic should be selected for treatment based on sputum bacterial culture and drug sensitivity test results.