Any of the following clinical features should be considered for the possibility of tuberculosis The onset of the disease is insidious, the course of the disease is prolonged, the anti-infection is ineffective, and the WHO Expert Committee recommends that: Coughing for more than 2 weeks, or accompanied by coughing up sputum, chest tightness, chest pain, fever, weight loss, and women’s menstrual disorders, etc., are the suspected symptoms of pulmonary tuberculosis. History of close contact with the person who excreted the bacteria Previous history of extrapulmonary tuberculosis such as lymphatic tuberculosis and pleurisy. Previous or recent history of tuberculosis hypersensitivity syndrome such as erythema nodosum, herpetic keratoconjunctivitis, tuberculous rheumatoid arthritis, etc. and other possible causes can be excluded. Those with TB-related diseases: diabetes mellitus, silicosis, post-gastrectomy, postpartum, viral infections, hemodialysis, hormone application, and other high-risk groups.