When a family member has tuberculosis, relatives should be examined to prevent being infected with tuberculosis. Tuberculosis is a chronic infectious disease of the respiratory system caused by infection with Mycobacterium tuberculosis when the body’s immunity is reduced. It is mainly transmitted by droplets from the respiratory tract of the patient, and a large number of Mycobacterium tuberculosis bacteria are discharged and transmitted to the healthy surrounding population. Family members and relatives are close to each other and can easily be in the same space, so it is easy to be infected through the respiratory system in this way. If you are infected, you should be treated in a timely manner.