목적: Since the advent of surgical robotics a few years ago, robot- assisted surgical techniques have been applied in various fields including head and neck surgery. Although, we previously reported the feasibility of various robot-assisted head and neck (HN) surgeries, sometimes there were some mechanical limitations. Here, novel robotic surgical system (Da Vinci Xi, Intuitive Surgical, Inc. Sunnyvale, CA), introduced to our institution in late 2014 for the first time in Korea, was evaluated as a mean to perform robot-assisted HN surgeries including submandibular gland (SMG) resection, modified radical neck dissection (mRND), and thyroidectomy via retroauricular (RA) approach. 방법:After cadaver study on feasibility and safety, we performed robot-assisted SMG resection, mRND and thyroidectomy for the each patient with biopsy-confirmed benign SMG tumors, HN squamous cell carcinoma, and papillary thyroid cancer, respectively. The patients position, making working space, docking, and surgical technique were nearly the same as previous report, whereas, all four instruments were placed through RA port in contrast to previous Da Vinci Si (Intuitive Surgical, Inc.) setting. 결과:The surgeries were successful in all patients with no serious intraoperative complications. The new system provided easier reach to target anatomy and wider range of motion without collision between robotic arms. Furthermore, surgeon could perform the entire surgery using three robotic arms (Maryland Bipolar forceps, Fenestrated Bipolar forceps, and Spatula Monopolar forceps) with minimal assistance of assistant surgeon. Especially for thyroidectomy, contralateral thyroid lobe could be much more easily dissected via the same RA port than previous surgical system. 결론:The new surgical system is more optimized for the robot-assisted HN surgeries such as SMG resection, thyroidectomy as well as neck dissection than previous one. It can be expected to be a next frontier for robotic surgery in HN field.