Bronchitis is an acute inflammation of the trachea and bronchi caused by infection or physical or chemical irritation or allergic reaction, and is a common respiratory infection in children. Whether bronchitis in babies can heal on its own is largely determined by its etiology. The etiology of acute bronchitis is mainly infection. If it is only a simple viral infection, it can generally heal itself after proper symptomatic treatment, attention to insulation, drinking more water, and attention to indoor air circulation. The viruses of this type are mostly rhinovirus, coronavirus, influenza, adenovirus, etc. However, on the basis of viral infections, often can cause secondary infections, more common include bacteria, such as Streptococcus pneumoniae, beta-hemolytic streptococcus A group, staphylococcus, etc.; Mycoplasma pneumoniae and so on. When complicated by bacterial infections, appropriate antibiotic treatment should be selected without delay to avoid the development of pneumonia. In addition, environmental pollution, dirty air or frequent exposure to toxic gases can also stimulate the bronchial mucosa and cause inflammation. Low immune function or specific qualities, such as malnutrition, rickets, allergic reactions, as well as chronic rhinitis and pharyngitis, can be triggers for this disease. Therefore, children with bronchiectasis should be seen in a hospital and the appropriate treatment plan should be chosen after identifying the cause. The treatment should also pay attention to general care, such as keeping warm, ensuring adequate nutrition, eating light, easily digestible liquid or semi-liquid food, small and frequent meals, eating more fresh vegetables and fruits, and exercising to strengthen the body’s resistance.