The liver is the site where thyroxine is converted into triiodothyronine.Liver transplantation(LT)is inevitably associated with changes in thyroid hormones(TH)during the perioperative period,and TH plays a crucial role in regulating the normal metabolic rate of all cells,including liver cells.Therefore,alterations in thyroid function are closely related to the prognosis of LT patients.In this regard,the authors provide a review of research related to thyroid function during the perioperative period of LT,with the aim of providing references for both clinical and research purposes.