Transumbilical laparoscopic-assisted pediatric appendectomy is a new treatment that combines traditional surgical operations with modern laparoscopic techniques, and this method combines exactly the advantages of both. First of all, about 1/3 of CA (Conventional appendectomy) can be done with a small incision of about 3 cm, but in open surgery, the search for many appendices becomes a major step and difficulty in the operation, which makes CA with small incisions more difficult. Laparoscopic appendectomy) has the advantage that it is easy to find the appendix, avoids the irritation of the plasma membrane by gloves and gauze, and reduces misdiagnosis. Secondly, this method eliminates the need for repeated intra-abdominal electrocoagulation, hemostasis, ligation and other delicate operations, which can be easily mastered by laparoscopic beginners. Moreover, the treatment of ligation and suture is more reliable, and it can purse the buried stump to avoid or reduce the occurrence of abdominal adhesions. This method has 2 less incisions than the 3-hole method, no complicated intra-abdominal operations, absolute intraoperative pressure pneumoperitoneum time <10 min, reducing pneumoperitoneum interference, appendix cut off outside the abdominal cavity, reducing the chance of abdominal contamination, and reducing the incidence of abdominal residual infection. This method does not use expensive disposable consumables, reducing medical costs and achieving the same clinical results of laparoscopic resection of the pediatric appendix. The unique advantage of this procedure is that there is no visible scar in the abdomen after surgery, and the only incisional scar is hidden in the umbilical fossa. Indications: chronic appendicitis; acute simple appendicitis; suppurative appendicitis with a short course and no gangrenous perforation of the appendix on laparoscopic examination. It is not suitable for children with ileal fixation, obese children or children with difficulty in trying to drag out, and it is also not suitable for appendiceal gangrene, perforation, adhesions or ectopic appendix.