Tuberculosis is transmitted mainly through droplets produced by the patient’s cough and sputum. Whether or not the disease develops after infection with tuberculosis bacteria depends on the number of infected bacteria and one’s own resistance, and people with low immune function are susceptible. Main manifestations: 1. cough and sputum, which may be accompanied by coughing up blood, chest pain and difficulty in breathing. 2, fever, often low fever in the afternoon, may be accompanied by weakness, night sweats, lack of appetite, weight loss, menstrual disorders. 3.Tuberculous metaplasia, such as nodular erythema, vesicular conjunctivitis and tuberculosis rheumatism, etc. 4.Tuberculin test, showing strong positivity indicates that the body is in a state of hypersensitivity and high morbidity. Treatment principles: early, regular, whole, moderate, combined.