4-year-old children are always bronchial infection that is recurrent bronchitis, can be treated with general treatment, medication and other treatments, and improve bronchoscopy if necessary, while paying attention to avoiding risk factors. 1. General treatment: attention should be paid to changing the child’s position in time, drinking more water, making the child in a comfortable environment. 2. Drug treatment: anti-infection treatment should be carried out according to the cause of infection. For example, bacterial infection can be applied to amoxicillin, ceftazidime and other antibiotics; mycoplasma infection can be given azithromycin and other drugs for treatment. Meanwhile, those with sticky sputum can use drugs such as Ambroxol to relieve cough and resolve sputum as appropriate. Usually, you should avoid contact with babies with similar symptoms, and go to fewer crowded places to avoid cross-infection. If you have any questions, please feel free to contact us at the address below.