Symptoms of tuberculosis in 6-year-old children are usually manifested in the following aspects: 1, there is a history of contact with patients with tuberculosis or a history of tuberculosis epidemiology. 2, there are different degrees of coughing symptoms, tuberculosis cough is usually irritating cough is more violent, coughing for a long time will be sputum with blood. 3, there are different degrees of tuberculosis infection toxicity, manifested in poor mental health, lethargy, low appetite, afternoon fever, etc.. 4, there are signs of lungs, tuberculosis infection, especially tuberculosis usually may have shortness of breath, chest pain, etc. 5, there are imaging signs, tuberculosis usually appears to be the increase in the size of the lungs, there can be pleurisy, pleural effusion is also possible, there may be pulmonary fibrosis or calcification.