There is no clear statistics on how many years a 75-year-old man can live with tuberculosis, and most of the clinical anti-tuberculosis treatments do not affect life expectancy. Tuberculosis is caused by Mycobacterium tuberculosis infection, which is a kind of consumptive disease, easy to cause physical weakness, 75-year-old people may have obvious impact on the physical condition after infection. Generally speaking, after infection, regular anti-tuberculosis treatment is needed, and changes in various indicators of the body are closely monitored. Through standardized treatment, as long as the disease is well controlled, it will not have a great impact on life expectancy. Clinically obvious cough, low fever, night sweats and even hemoptysis, need to be hospitalized in time for observation, diagnosis of the disease after standardized treatment, to avoid delays in the condition.