목적: Robotic thyroidectomy using various approaches has gained popularity for patients seeking reduced neck scarring and enhanced cosmetic satisfaction. However, the comparison of various approaches in robotic thyroidectomy has not been done well. The aim of this study was to compare the efficacy and advantages of a gasless unilateral axillary (GUA) approach versus postauricular facelift approach in robotic thyroidectomy. 방법:We retrospectively analyzed the data of 61 patients who underwent robotic thyroidectomy with or without central neck dissection using a GUA (43 cases) approach and postauricular facelift approach (18 cases) between Sep 2013 and Oct 2014. We excluded patients who underwent simultaneous lateral neck dissection or cases with completion thyroidectomy. 결과:Robotic thyroidectomy was successful in all patients. There were no differences in terms of patient and tumor characteristics, extent of thyroidectomy and central neck dissection, operative time, postoperative complications, and immediate postoperative pain between the two approaches. Cosmetic satisfaction was excellent in both groups. 결론:The early surgical outcomes of GUA and postauricular facelift approaches are similar. Both are safe, and yield cosmetically excellent results. However, a GUA approach might be superior in performing total thyroidectomy using a unilateral incision.