Ascending colon resection surgery mainly involves several steps, such as anesthesia, open exploration, blocking and freeing, anastomosis and closure of the abdomen, etc. The surgery should be performed in regular hospitals. Clinically, the most common ascending colon resection, i.e. radical right hemicolectomy for ascending colon cancer, has two modes, i.e. traditional open surgery and minimally invasive laparoscopic surgery, and the main steps are more or less the same. 1. Anesthesia: general anesthesia or epidural anesthesia is generally used, disinfection and toweling after successful anesthesia. 2. Laparotomy exploration: traditional laparotomy generally take the right side of the rectus abdominis muscle incision, laparoscopy to establish an artificial pneumoperitoneum approach; reveal the field of operation, exploration, to determine the possibility of surgery and the location of the operation, the size of the scope. 3.Blocking and freeing: according to the requirement of tumor resection, the end of ileum and transverse colon should be blocked first, and the blood supply of the right half of colon such as ascending colon artery, right branch of transverse colon artery and ileocolic artery should be found, and then ligated one by one, and then the right half of colon should be free from the posterior wall of the abdomen and resected. 4. Anastomosis and abdominal closure: the terminal ileum and the transverse colon are anastomosed end to side, the abdominal cavity is checked for active bleeding, instruments and gauze are counted, drainage is placed, and the abdomen is closed. Ascending colon resection belongs to medium and large-scale surgery, which should be performed in qualified hospitals, and the communication between doctors and patients should be strengthened during the perioperative period in order to ensure a good therapeutic effect.