Objective To explore the effectiveness of da Vinci Robot Xi system-assisted single-incision laparoscopic surgery for treating benign ovarian lesions in children and adolescents.Methods From June 2020 to March 2023,13 cases of benign ovarian lesions were operated by using a specially designed 4-channel single-incision laparoscopic device assisted by the da Vinci Robot Xi system.The docking between the da Vinci Robot and the patient was completed,and the affected ovaries were cut open with a non-powered scissors to expose the tumor tissue.The tumor tissue was removed as completely as possible along the edge of the tumor,and an absorbable suture was used to seal the wound followed by restoring the umbilical structure.Results All the 13 cases underwent ovarian benign lesion resection through a single incision in the umbilical region,without conversion to open surgery.The surgical time was 81-246 min,with an average of 161.4 min.The intraoperative bleeding volume was 5-50 ml,with an average of 21.2 ml.During the operation,2 cases of ovarian torsion and 3 cases of ovarian benign lesion rupture(with postoperative drainage tube placement)were found.Postoperative pathological findings showed 9 cases of mature teratoma,2 cases of serous cystadenoma,and 2 cases of simple cyst.The postoperative hospitalization time was 2-7 d,with an average of 4.2 d.There was 1 case of postoperative incision infection who was cured after antibiotic treatment.The follow-up period was 6-36 months,with an average of 21.1 months.No tumor recurrence or complications occurred,and all the patients had hidden scars on the umbilical incision.The patients and their families were satisfied with the postoperative appearance.Conclusion The application of da Vinci Robot Xi system-assisted single-incision laparoscopic surgery in the treatment of benign ovarian lesions in children and adolescents is safe and feasible,which can be considered as an option for treating such conditions.