Acute bronchitis is usually well in about 1-2 weeks, but there are large individual differences. How long it takes to get well from acute bronchial depends on the severity of the disease, whether it is combined with underlying diseases, and the type of causative agent. It usually heals in about 1-2 weeks. Some bronchitis has an acute onset and prominent symptoms, such as persistent high fever, severe cough, and a large amount of purulent sputum, which can lead to a prolonged course of the disease. The course of the disease is also prolonged in some patients with comorbid underlying diseases, such as pulmonary hypertension, coronary artery disease, congenital heart disease, and severe diabetes mellitus. Pathogenic bacteria is also an important factor affecting the course of treatment, such as bronchitis caused by Mycoplasma pneumoniae, the course of the disease is longer; bronchitis caused by drug-resistant bacteria, difficult to treat, very easy to progress to pneumonia. Acute bronchitis patients, it is recommended to seek medical treatment in a timely manner, active treatment, otherwise the delay will also lead to the aggravation of the condition.