Tuberculosis prophylaxis, generally need between six months to two years, the specific time of medication with the patient’s condition needs to have a relationship. Tuberculosis requires prophylactic medication, need to follow the early regularity, must be used throughout the appropriate amount of medication, generally need more than half a year, and may even need a year to two years; different patients, the severity of the disease is different, the lung damage and lung infections are different, need to be active under the guidance of specialists treatment. In addition to receiving tuberculosis prophylactic medication, patients need to be isolated from tuberculosis patients and need to be observed, with attention paid to sputum management. In addition, tuberculosis is a dangerous disease that requires active treatment.