1.Current epidemiology shows that 90% of tuberculosis patients are in developing countries. Tuberculosis is a common and frequent disease in China, and its incidence has been on the rise in recent years. The whole body may be infected with tuberculosis in multiple systems, the most common clinical tuberculosis is pulmonary tuberculosis. 2, not all tuberculosis will be infectious, only sputum smear check antacid bacilli positive people are infectious, especially tuberculous pleurisy is not infectious. Clinically, the detection rate of sputum tuberculosis bacilli is low, and it is difficult to diagnose tuberculosis in patients with sputum test “smear negative” or “bacilli negative”, based on clinical symptoms, chest imaging features and some other auxiliary evidence of tuberculosis. If the clinician has a high suspicion of TB, diagnostic anti-tuberculosis treatment is often recommended. Simply put, diagnostic anti-tuberculosis treatment means that the patient is given anti-tuberculosis drugs for a period of time to observe, and if the patient’s symptoms and lesions improve, then it indirectly proves that the infection is tuberculosis. 4, anti-tuberculosis drugs need to be standardized, remember not to take them whenever you want, not to take them whenever you don’t want, not to stop taking them at will, and not to forget to take them. Once the drugs are taken indiscriminately, it is easy to lead to tuberculosis resistance, anti-tuberculosis drugs become less effective, and even anti-tuberculosis treatment failure. 5, anti-tuberculosis drugs have certain side effects, such as liver and kidney function damage, bone marrow suppression, central nervous damage, peripheral neuritis, hearing loss, gastrointestinal reactions, skin rash, etc. 6. The duration of anti-tuberculosis treatment is relatively long, which may vary from 6-12 months. During the treatment period, regular or irregular outpatient follow-up is required according to the condition, and blood routine, liver and kidney function, and chest CT should be reviewed. 7. Please do not overexert yourself; exercise to strengthen your immunity; open windows regularly and do not spit; if you feel unwell, please consult a doctor in time.