The patient’s neck is a little swollen, not painful, generally common causes are mainly the following: a. Hyperthyroidism, which can be caused by an elevated level of thyroxine in the body, resulting in diffuse enlargement of the thyroid gland, and accompanied by the generation of thyroid nodules, which can be manifested as a significantly swollen neck, which can be without obvious painful symptoms. The nature of the lesion can be clarified by thyroid ultrasound and thyroid function tests. Most patients do not require surgery after medication. Lymphoma can cause swollen lymph nodes in the neck, which can be manifested as swollen neck without obvious pain, and the nature of the lesion can be clarified through local ultrasound and lymph node aspiration biopsy.