Cryptorchidism is a common disease in pediatric urological system. Open surgery for high cryptorchidism requires dissecting the inguinal area and exploring the abdominal cavity, which is very traumatic and causes obvious postoperative pain and scrotal swelling. Transumbilical laparoscopic surgery has obvious advantages: 1. The umbilicus is a natural scar site, and there are relatively few neurovascular vessels in this area, so surgery from here will result in less intraoperative bleeding, less postoperative pain and faster recovery; 2. The umbilical fold is obvious and the scar is hidden, so the postoperative cosmetic effect is excellent; 3. testis and blindly expanding the surgical trauma. Therefore, high cryptorchidism is an absolute indication for laparoscopic surgery. Minimally invasive is one of the main directions of surgical development in the 21st century. In recent years, with the continuous development of laparoscopic technology, minimally invasive surgery has begun to evolve gradually toward a scarless, natural cavity surgical approach. Scarless abdominal wall surgery has also received increasing attention from the surgical community due to its ability to bring about less physiological trauma and even psychological trauma, and transumbilical access endoscopic surgery is precisely in line with the above concept. Compared with traditional laparoscopic surgery, it has the advantages of less trauma, less postoperative pain, faster recovery and shorter hospital stay, and because the single incision is concealed in the natural skin folds of the umbilicus, there are few visible surgical scars on the abdominal wall after surgery, which can achieve good cosmetic results.