The neck of patients with Hashimoto’s thyroiditis may become thicker, which is related to the enlargement of the thyroid gland, and the degree of thickness of the neck is not exactly the same in different patients. Hashimoto’s thyroiditis is an autoimmune disease that usually progresses slowly, with some patients experiencing gradual enlargement of the thyroid gland months to years after the onset of the disease, resulting in a thicker neck. The enlarged thyroid gland may compress the trachea and esophagus, leading to difficulty breathing or swallowing, and in some cases, hoarseness and choking, which can be treated with surgery in severe cases. There is no treatment for the cause of this disease, mainly symptomatic treatment, usually pay attention to the observation of the condition, and regularly go to the hospital for re-examination.