Gasless endoscopic surgery was applied to thyroidectomy. The procedure is a safe and technically feasible method producing good cosmetic results. Compared to the previous endoscopic thyroidectomies, this method is superior with respect to performing hemostasis and minimizing the possible complications resulting from gas insufflating surgery (e.g. hypercapnea or massive subcutaneous empysema). We successfully performed the removal of 37 thyroid tumors of 35 cases by gasless endoscopic surgery without any significant complications. No scars remained in the neck and all patients were satisfied with the cosmetic results. Gasless endoscopic thyroidectomy will become a strong alternative to conventional thyroidectomy for cases of benign thyroid tumors requiring good cosmetic results.