Thyroid enlargement can be seen in simple thyroid enlargement, hyperthyroidism, hypothyroidism, etc. The cause of the disease should be clarified and then choose the appropriate treatment, mainly including iodine supplementation, anti-thyroid drugs, surgery, etc. 1. Simple thyroid enlargement: mostly caused by iodine deficiency, the patient’s thyroid function is usually unaffected, and he/she can eat more food with high iodine content, such as seafood, kelp, iodized salt, etc., and pay attention to the regular rechecking. 2. Abnormal thyroid function: Patients with hyperthyroidism can take anti-thyroid drugs such as methimazole and propylthiouracil, as well as radioactive iodine therapy and surgical treatment. Patients with hypothyroidism can take oral levothyroxine for replacement therapy. 3. Symptoms of compression caused by enlarged thyroid gland: If the enlarged thyroid gland is more serious and compresses the esophagus, trachea, nerves and other adjacent tissues, surgical resection is needed. Patients with an enlarged thyroid should seek medical attention in a timely manner.