Enlarged cervical lymph nodes may be caused by infections, tumors, rheumatic immune diseases, etc. It is recommended to consult a doctor in time. 1. Infection: common pathogens include bacteria, viruses, Mycobacterium tuberculosis, etc., mostly due to inflammation of nearby tissues, such as pharyngitis, laryngitis, tonsillitis, gingivitis, pulpitis, etc., all of which can be manifested by enlarged cervical lymph nodes. These enlarged lymph nodes form inflammation, resulting in lymph nodes with tenderness, soft texture and good mobility. 2. Tumor: lymphoma, lymphoblastic leukemia, etc. can invade the cervical lymph nodes, resulting in enlargement; malignant tumors, such as thyroid cancer, laryngeal cancer, breast cancer, lung cancer, etc., can be metastasized through lymphatic transfer, resulting in enlargement of the cervical lymph nodes. These enlarged lymph nodes have hard texture, no tenderness, poor mobility and easy to be fused. 3. Rheumatic immune diseases: such as rheumatoid arthritis, some patients may have skin rheumatoid nodules in the neck, and most of the patients also have morning stiffness, joint pain, joint swelling, joint mobility disorders and other arthropathic manifestations. Patients with cervical lymph node enlargement should consult a doctor in a timely manner, under the guidance of the doctor to identify the cause of the disease, if necessary, follow the doctor’s instructions for appropriate treatment.