Conclusion During total or subtotal thyroidectomy, parathyroid glands and its artery blood-supply should be exposed and preserved to prevent hypoparathyroidism after surgery.

• 结论甲状腺全切及近全切术中辨认和保护甲状旁腺及其血液供应，可有效防止术后甲状旁腺功能低下的发生。