Once the diagnosis of megacolon is established, surgery should be performed at a later date to ensure safety, otherwise compensatory pathological changes may occur in the normal intestinal canal involved in the diseased segment, which may be forced to be removed during surgery and cannot be regenerated; in addition, delayed surgery is bound to cause significant or even serious delay in the growth and development of the affected children compared with normal children of the same age. Some patients with short and ultra-short segments can be treated conservatively. 1.Modified soave surgery (transanal megacolon radical surgery): In the past decade, this surgical approach has become popular all over the world, and because the surgical design is more in line with the pathophysiological anatomy, the surgical method has become simpler and safer, and the postoperative complications and sequelae have been significantly reduced, making the soave procedure widely accepted. During the operation, the diseased intestine is dragged out and removed through the anus, and the proximal “normal” colon, which is severely dilated and hypertrophied, is appropriately removed, and the severed end of the colon is sutured to the anal canal cut edge on the dentate line to restore the patency of the intestine. 2.One-stage enterostomy: Patients with combined megacolon crisis, partial long-segment megacolon, or other reasons that cannot tolerate one-time surgical cure should be operated in stages, and enterostomy should be performed first, and the location of the fistula should be chosen at the dilated intestinal segment, and then surgical cure is usually performed months after the fistula. 3, transabdominal or laparoscopic minimally invasive methods to assist in the radical treatment of giant colon: in case of long spastic intestinal tube or serious local adhesions of intestinal tube, short colonic mesentery and high tension, it is difficult to continue to drag out the intestinal tube during surgery, transabdominal or laparoscopic assisted ligation to cut off the secondary vessels of colonic mesentery to facilitate the drag out of the intestinal tube for radical treatment. 4.Duhamal megacolon radical surgery: traditional surgical method, relatively complex surgical method, need special metal instruments to assist, because of the surgical design and part of the diseased intestinal wall can not be completely removed, more postoperative complications and sequelae, often have the performance of dirty feces, slightly worse independent defecation, has been abandoned, some backward cities and regions in China are still delayed. 5.Thomas operation Rehbein operation Swenson operation, etc.: Nowadays, it is rarely used.