Abstract: Objective:To investigate the reoperation indications of thyroid and prevention of complications.Methods:The clinical data of 36 cases with thyroid reoperation were retrospectively analyzed.Results:Three cases with temporary recurrent laryngeal nerve injury,2 cases with temporary hypoparathyroidism,1 case with chyle leakage and 1 case with bleeding were observed,and the other patients recovered well.Conclusions:The reoperation of thyroid is difficult and has more complications.Preoperative evaluation and careful operation can reduce the occurrence of complications.