目的:探讨在甲状腺全切术中喉返神经喉外分支的变化。方法:回顾性分析108例显露颈段喉返神经的甲状腺全切手术患者的资料。结果:解剖喉返神经216根,其中20根存在分叉变异,分叉率为9.26%。且分叉比例左侧高于右侧。结论:喉返神经入喉前存在分叉变异,虽然较国外发生率低,但亦应引起重视,减少神经损伤的可能。 Objective: To investigate the changes of the throat branch of recurrent laryngeal nerve during total thyroidectomy. Methods: A retrospective analysis of 108 cases of patients with cervical recurrent laryngeal nerve thyroidectomy data. Results: There were 216 recurrent laryngeal nerves, of which 20 had bifurcated variation with bifurcation rate of 9.26%. And the ratio of the left fork is higher than the right. Conclusion: There are bifurcation variations in the recurrent laryngeal nerve before laryngeal nerve entrance. Although the incidence is lower than that in other countries, attention should be paid to reduce the possibility of nerve damage.