Cervical lymph node enlargement is serious or not, according to the specific condition analysis, different types of lymph node enlargement is not the same cause of cervical lymph node enlargement has a variety of reasons, some after treatment soon get better, and some due to the seriousness of the original disease, it will cause significant impact on the body. Causes of cervical lymph node enlargement include the following categories: I. Inflammatory enlargement, bacteria, viruses, rickettsiae, chlamydia, fungi, spirochetes, protozoa, milkworms and other causes of acute and chronic lymph node infections lymph nodes can be congested, edema, lymphocyte and macrophage hyperplasia, such as neutrophil mononuclear cells and plasma cell infiltration, and even the occurrence of necrosis and granulomas, so that lymph nodes increase in size accompanied by pain. Tumor enlargement, whether it is endogenous tumor originated from lymphatic tissue, such as lymphoma, lymphoblastic leukemia, etc., or lymph nodes with metastatic tumor. For example, oral cancer metastasized to cervical lymph nodes, nasopharyngeal cancer metastasized to cervical lymph nodes, lung cancer metastasized to left supraclavicular lymph node, which can lead to enlargement of cervical lymph nodes. Rheumatic immune diseases, such as rheumatoid arthritis, systemic lupus erythematosus and so on. Fourth, there are some other disease factors, such as nodal disease, lymphadenopathy and sinus histiocytosis, vascular follicular hyperplasia and so on. Different types of cervical lymph node enlargement, should choose different treatment measures, patients in the presence of lymph node enlargement, not unauthorized treatment, must go to the regular hospital in order to get professional treatment. If the lymph node enlargement is benign, it is usually caused by upper respiratory tract infections, broken skin on the surface of the body, as well as ulcers in the mouth, gingivitis, perineal infections, urinary tract infections and other related lymph node enlargement. For this kind of enlarged lymph nodes, regular follow-up and examination, and oral or systemic infusion of antibiotics and antiviral drugs can be used, commonly used cephalosporin antibiotics or metronidazole, ribavirin, etc..