Infected tuberculosis without symptoms if it is active tuberculosis or with treatment, infected tuberculosis without symptoms if it is old tuberculosis can not be treated. Active tuberculosis performance is more insidious, without any clinical manifestations, tuberculosis patients do not notice the existence of uncomfortable places in the body, only to do chest CT to find that the lung lesions in the slow development of tuberculosis, if not treated in time, the tuberculosis will become serious, to their own health adversely affect, but also jeopardize the health of people around them. Some lung lesions of tuberculosis will remain stable, and patients do not have any symptoms, mostly belong to the old tuberculosis, that can not be treated. Infected tuberculosis has no symptoms, whether to treat should be decided by the doctor, it is recommended that infected tuberculosis patients should go to the hospital in a timely manner.