If the lymph node lesion is benign, it is not serious. If the lymph node lesion is caused by tumor metastasis, it is relatively more serious. The common benign lymph node lesion is lymph node inflammation, which is caused by bacterial infection, manifesting swollen lymph nodes, pain and even septic formation. Oral antibiotics, such as cefradine or levofloxacin, are needed for treatment, and the inflammation of lymph nodes can subside after treatment. If the swollen lymph nodes are caused by tumor metastasis, it is relatively serious, and usually the swollen lymph nodes are not accompanied by pain. However, it should be divided into different cases. In case of papillary thyroid cancer with local lymph node metastasis, even if lymph node metastasis occurs in the neck, lymph node dissection can be performed because the malignancy of papillary thyroid cancer itself is relatively low. If lymph node metastasis occurs again after surgery, regular follow-up can be considered. In case of lymph node metastasis in gastric cancer or colon cancer, it is relatively more serious and requires tumor debulking. After complete removal of lymph nodes in the region, pathological examination will be performed and the next treatment plan will be decided according to the pathological staging results.