In the entry physical examination, it is found that there is old tuberculosis, which is completely able to pass unaffected. Although tuberculosis is a chronic infectious disease caused by infection with Mycobacterium tuberculosis due to a decrease in the body’s resistance, and patients with exclusion are the source of infection, most tuberculosis can be completely cured with standardized combined anti-tuberculosis drug treatment. After treatment and cure of tuberculosis, different degrees of old lesions will be left in the lung tissue, such as different degrees of fibrosis and calcification. After cured, tuberculosis is not infectious at all, so the medical examination for entry into the workplace is not affected, just like human skin injuries that heal but leave scars of varying degrees.