The symptoms of geriatric tuberculosis and the site of tuberculosis lesions are related to the urgency of the onset and the presence of underlying diseases. The clinical symptoms are the same as those of other age groups, and may include cough, sputum, afternoon fever, and night sweats of varying degrees. Elderly patients with TB often have an insidious onset, no clear history of morbidity, or history of TB exposure. The common symptoms of TB patients are fever, night sweats, and coughing up blood, but they are less common in the elderly population. Elderly patients are often accompanied by chronic respiratory disease, and when tuberculosis progresses actively, it is often thought to be due to chronic lung disease, and by the time it is finally diagnosed, it is more severe, with serious lung destruction and high infectivity. Some elderly TB cases have only symptoms such as generalized weakness, decreased appetite, and gastrointestinal tract dysfunction, and this TB is much less easily detected. In addition, cases without any symptoms are also found in a proportion of elderly TB, leading to a high rate of underdiagnosis of TB in the elderly. It is recommended that older people have routine annual physical examinations to be able to detect TB as early as possible and achieve early treatment.