正常妊娠和某些病理妊娠可出现类甲亢样表现及甲亢的生化指标异常，这些异常与绒毛膜促性腺激素(hCG)的分泌有关，hCG平均浓度与TSH抑制呈负相关，其机理可能是(1)hCG与TSH结构相似，可与TSH受体之间交叉反应；(2)hCG与TSH的一对亚基相似可互为作用；(3)分子变异。hCG分泌异常所致的甲亢在临床上是否应用药物治疗，有待进一步研究。 Normal pregnancy and some pathological pregnancy may appear hyperthyroidism-like performance and abnormal biochemical indicators of hyperthyroidism, these abnormalities and the secretion of human chorionic gonadotropin (hCG), hCG average concentration and TSH inhibition was negatively correlated with the mechanism may be ( 1) hCG is similar to TSH and cross-reacts with TSH receptors; (2) a pair of subunits of hCG and TSH are similar to each other; and (3) molecular variation. HcG secretion caused by abnormal hyperthyroidism in the clinical application of drug therapy, pending further study.