Bloodletting treatment for swollen lymph nodes is not useful, and examination is needed to clarify the causes of swollen lymph nodes, such as inflammation, lymph node tuberculosis, lymph node tumors or metastatic malignant tumors and so on. 1. Inflammation of lymph nodes: when inflammation of lymph nodes occurs, it is necessary to find the primary lesion, and it is recommended to actively treat the primary disease under the guidance of the doctor, and usually the lymph node inflammation will be recovered, and bloodletting treatment is of no use. 2. Lymph node tuberculosis: when lymph node tuberculosis is found, it needs to be treated with long term, regular, sufficient amount and course of anti-tuberculosis drugs under the guidance of doctor. 3. Lymph node tumor: for lymph node tumor, it is necessary to judge whether there is malignant lymphoma according to pathological test, and it is often necessary to use surgery or radiotherapy or chemotherapy to treat it, and blood-letting treatment has no effect. 4. Metastatic malignant tumor: there is no particularly good treatment for metastatic malignant lymphoma, and it is necessary to find the primary lesion and carry out anti-tumor treatment under the guidance of doctors. For lymph node enlargement, the first thing to do is to clarify the cause, not to continue the bloodletting treatment, it is recommended to consult the general surgery department of regular hospitals.