Bronchitis is divided into acute bronchitis and chronic bronchitis. Acute bronchitis has early symptoms of a cold, followed by cough or with wheezing and dyspnea. Acute bronchitis is all about symptomatic treatment and can be treated with appropriate cough suppressants such as dextromethorphan, pentoxifylline, etc. At the same time, it is necessary to pay attention to rest and increase water intake. For patients with bronchospasm present, bronchodilators such as salbutamol can be inhaled. Acute bronchitis mainly lies in strengthening the body and reducing colds; while patients with chronic bronchitis mainly show recurrent coughing and coughing up sputum with a long duration, which is related to long-term smoking and exposure to harmful gases and particles, whose treatment mainly lies in preventing respiratory infections, preventing colds, quitting smoking and reducing exposure to harmful gases. Patients with respiratory tract inflammation can be given anti-inflammatory treatment, while those with airflow limitation can inhale tiotropium bromide to improve pulmonary ventilation.