Bronchitis is caused by bacteria as well as other pathogenic microorganisms. For bronchiectasis caused by bacteria, on the one hand, clinically active anti-infective treatment is required in the acute phase. The choice of antibiotics is based on the type of pathogenic microorganism, including penicillins, cephalosporins, macrolides, quinolones and other antibiotics often used in outpatient clinics. Another aspect of using antibiotics is to pay attention to the antibiotic antibacterial spectrum, the ability of antibiotics to enter the body tissue penetration, antibiotics causing adverse reactions, and more importantly, to consider how potent and pharmacokinetic the antibiotics are when they enter the body. The last thing you need to do is to use antibiotics for bronchitis and pay special attention to the drug sensitivity culture for the long-standing bronchitis, and select antibiotics for the drug sensitivity culture targeting.