ObjectiveTo investigate the clinical significance of lengthened Trocars in endoscopic thyroidectomy. MethodsThere were 102 cases of endoscopic thyroidectomy via the areola approach, which were divided into two groups:33 patients via lengthened Trocar, and 69 patients via normal Trocar. The operative time, blood loss, wound drainage, hospital stay, and postoperative complications in two groups were comparatively analyzed. ResultsCompared with the normal Trocar group, the operative time was shorter, subcutaneous separation area was smaller, blood loss was less, and postoperative drainage was less in the lengthened Trocar group(P < 0.05). The postoperative complications of lengthened Trocar group was less than normal Trocar group(P < 0.05). ConclusionsApplication of lengthened Trocars in endoscopic thyroidectomy brings benefits of less subcutaneous damage, shorte operative time, and better operation experience. This procedure is worth popularizing in clinical use.