Enlarged lymph nodes in the 6 regions of the neck can be seen in cervical lymph node tuberculosis, cervical lymphadenitis as well as lymph node metastasis of thyroid cancer and lymphoma. 1. Cervical lymph node tuberculosis, seen in children and young people, is mainly manifested in the anterior or posterior edge of the sternocleidomastoid muscle on one or both sides of the neck. When it occurs in the anterior border of sternocleidomastoid muscle, it will be manifested as enlarged lymph nodes in zone 6. 2. Cervical lymphadenitis, such as acute and chronic lymphadenitis in the neck, will appear as enlargement of multiple lymph nodes in the neck. 3. Lymph node metastasis of thyroid cancer, thyroid cancer is a common malignant tumor in the neck, and the 6th region of the neck is also the most common metastatic site of thyroid cancer, and it is also the most common area to be cleared by surgery. 4. If enlarged lymph nodes in other parts of the body are found at the same time, consider whether there is the possibility of lymphoma, need to do relevant examination, and do lymph node biopsy for clear diagnosis if necessary. Patients with enlarged lymph nodes in the neck should go to the hospital in time and deal with it actively.