The diagnosis of lymphatic tuberculosis in children is difficult, and when children with a clear diagnosis of pulmonary tuberculosis develop lymphomegaly, they need to be examined carefully: 1) observe whether the lymph nodes on both sides are symmetrical, and whether there are local abscesses and fistulae, and then perform palpation of the lymph nodes. CT scan can help to understand the location and scope of the tumor, help to clarify the relationship between the mass and the tissue structure of the body, and provide an important reference basis for surgical treatment. 3.Pathological examination, such as puncture biopsy, in which a fine needle is inserted into the mass and the tissue is extracted by force for cytopathological examination. If the test result is negative, further examination should be performed in conjunction with clinical examination; incisional biopsy should be used with caution and is generally limited to patients who have failed to make a clear diagnosis after multiple examinations, and individual lymph nodes should be removed intact during surgery to prevent the spread of lesions. When tuberculous cervical lymphadenitis is suspected, incisional biopsy may result in a wound that does not heal for a long time, so care should be taken to prevent this.