Acute bronchitis needs more than 1 week to be cured after drug treatment, usually not more than 1 month; chronic bronchitis needs long-term drug treatment and prevention. The treatment of acute bronchitis can be divided into general treatment, symptomatic treatment, antibacterial treatment and so on. 1. General treatment: pay attention to rest, drink more water and keep warm. 2. Symptomatic treatment: for severe cough without sputum, cough suppressants such as dextromethorphan and pentoxyverine can be used; for patients with a lot of sputum, expectorants such as bromhexine and aminobromine hydrochloride can be used; and for those who are accompanied by bronchial spasm such as chest tightness and wheezing, drugs such as aminophylline and salbutamol can be used. 3. Antimicrobial therapy: routine use is not recommended; amoxicillin and cephalosporins can be used for those with severe symptoms combined with bacterial infections. Chronic bronchitis treatment can be divided into the acute phase of infection control, expectorant cough, antispasmodic asthma, etc., remission phase injection of immunomodulators. 1. Control of infection: the general choice of drug therapy, should be based on the main causative organisms and the degree of infection selection of antibiotics. Commonly used drugs are: ampicillin, amoxicillin, cephalosporins and azithromycin. 2. Expectorant, cough: bromhexine, aminobromine hydrochloride and other expectorants and dextromethorphan, pentoxyverine and other cough suppressants, should not be used purely as a cough suppressant, so as not to affect the discharge of sputum. 3. Antispasmodic and asthma: aminophylline, salbutamol and other drugs can be used. 4. Injection of immunomodulators: such as BCG polysaccharide ribonucleic acid injection has a certain effect on the prevention of secondary infections and reduction of seizures. Bronchitis patients should actively quit smoking, improve the living environment, do a good job of personal protection, when the symptoms are more serious, go to the hospital in a timely manner.