Acute bronchitis is often due to the patient's low immune function, accidental exposure to cold or getting rained on, leading to an acute onset of bronchitis, causing clinical symptoms like fever, cough, sputum production, dyspnea, and wheezing. In clinical practice, acute bronchitis generally heals within about a week after timely and effective anti-infective treatment, cough suppression, expectoration facilitation, and asthma relief. Bronchitis is divided into acute bronchitis and chronic bronchitis. Acute bronchitis, generally after effective symptomatic treatment such as anti-infection, is not likely to recur frequently if the patient has a relatively good immune function.