Children can also get tuberculosis, especially for children who do not receive BCG vaccination in time, the chance of contracting tuberculosis is significantly higher than that of other normal people, and the main ways of transmission of tuberculosis infection in children are as follows: 1. 2. digestive transmission: can also transmit Mycobacterium tuberculosis, mostly because of drinking unsterilized milk contaminated with Mycobacterium tuberculosis bovis or other food contaminated with Mycobacterium tuberculosis human type, which leads to the appearance of tuberculosis infection, mostly occurring in the pharynx and primary lesions in the intestine; 3. other transmission routes: some children with tuberculosis are infected through the placenta or due to inhalation of amniotic fluid, mostly Cornual tuberculosis occurs shortly after birth, mostly when the mother has systemic tuberculosis before delivery, mainly cornual tuberculosis or genital tuberculosis, which can also lead to tuberculosis infection. Some children who develop TB infection can be accompanied by obvious symptoms of infection, such as low-grade fever, night sweats, weakness, and wasting, while some children may not have obvious symptoms of respiratory infection or may even have no obvious symptoms of respiratory infection, creating many confounding factors for diagnosis. Therefore, for those who have a history of acute infection before the onset of the disease, especially those who have triggers that lead to the onset of tuberculosis such as measles or whooping cough, it is important to promptly ask whether there is a history of tuberculosis exposure or symptoms such as erythema nodosum or herpetic conjunctivitis, and to conduct tuberculin test testing if necessary, and to take chest X-ray and CT to clarify the diagnosis.