A 2-year-old baby with tuberculosis is usually not serious, and if active treatment measures are taken, the prognosis is good and not life-threatening. However, if treatment measures are not taken in time, it may lead to permanent damage to the lungs, which is life-threatening. Tuberculosis is caused by infection of the lungs by Mycobacterium tuberculosis, which is contagious and can be spread through respiratory droplets. Affected children may experience symptoms such as coughing, coughing up sputum, blood in sputum, hemoptysis, accompanied by dyspnea and wheezing. If a 2-year-old baby suffers from tuberculosis, the general situation is not serious, under the guidance of the doctor oral isoniazid, rifampicin, streptomycin, pyrazinamide and other anti-tuberculosis drugs, most of the children with a better prognosis, can achieve the purpose of the cure, do not need to worry about too much. However, if the child fails to take relevant treatment measures, the infection may worsen and spread from the lungs to other parts of the body, and can cause permanent lung loss, which is life-threatening and more serious. Once a child is diagnosed with tuberculosis, parents should take the child to a hospital and take treatment under the guidance of a doctor.