How long does it take for acute bronchitis to heal generally depends on the severity of the specific clinical symptoms and the patient’s physical condition, as follows: 1. mild symptoms: most patients with mild symptoms and in good physical condition can heal in about 1 week, such as acute bronchitis caused by physical and chemical factors, usually through nebulized inhalation of glucocorticoids, can heal in about 5-7 days; 2. If the acute bronchitis is caused by bacterial infection or by viral infection, and the symptoms are more serious, such as obvious manifestations of chills, high fever, cough, coughing up pus, etc., and the patient’s body resistance is relatively low, the treatment time is often up to 2 weeks or more. In a very small number of patients with acute bronchitis complicated by pneumonia, the treatment time is even longer and may be life-threatening in severe cases.