The treatment of tuberculosis in children is based on the principles of early, combined, regular, full and adequate dosage. For children with pulmonary tuberculosis, the medication and course of treatment vary according to the type of disease: 1. For children with primary tuberculosis combined with bronchial tuberculosis or infiltrative tuberculosis combined with bronchial dissemination, isoniazid, rifampin and pyrazinamide are used for 2-3 months during the intensive period, and isoniazid and rifampin are used for 4-6 months during the continuation period, and ethambutol can be used for children with severe disease and good expression; 2. Children with tuberculosis and caseous pneumonia are treated with quadruple drug therapy, i.e. SHRZ or HRZE for 2-3 months during the intensive period and HR for 4-6 months during the continuation period, and the treatment can be extended appropriately for 2-3 months according to the condition; 3. Children with tuberculous pleurisy, peritonitis and pericarditis are treated with a combination of isoniazid, rifampin and pyrazinamide for 3 months during the intensive period and isoniazid and rifampin for 6 -for 9 months. Take care to monitor liver function and use streptomycin or ethambutol during the intensive phase if the disease is severe. Informed consent must be given, and attention should be paid to hearing and vision monitoring, while the child should be well-expressed. The entire treatment phase of tuberculosis must be completed under the guidance of a regular hospital, with regular review of chest imaging during treatment, monitoring of adverse drug reactions, and appropriate adjustment of the medication regimen.