Preoperative knowledge guidance] 1, psychological guidance: this disease because of the long preoperative intestinal preparation time, most of the children are infants, and economic consumption, large surgery, postoperative may appear abnormal performance, such as: early postoperative daily bowel movements increased, up to more than ten times, and other problems, should be explained to parents in detail, so that they are prepared to face the disease, to obtain cooperation, early treatment. 2, diet: preoperative parents are advised to enter the child into a liquid, easily digestible, high-calorie, high-protein, high vitamin-free diet, in order to reduce the formation of feces and enhance the body’s resistance to tolerate surgery. In case of severe malnutrition, correct malnutrition. 3, actively cooperate with the medical staff daily with warm saline clean enema to reduce abdominal distension, excretion of feces, reduce the absorption of intestinal bacteria and toxins. During the enema process, choose a soft, thick and thin tube, be gentle, slow enema speed, gently massage the abdomen, repeat the enema, discharge the liquid and the infusion of liquid basically match, in order to prevent water poisoning. Pay attention to keep warm to prevent cold. 4, closely observe the changes in the condition, such as abdominal distension sharply aggravated, high fever, vomiting, diarrhea, general ‘condition suddenly deteriorated, may be complicated by small intestine colitis, immediately report to the medical staff for rescue. 5. Give the child oral antibiotics and intramuscular injection of vitamin K on time before surgery to prevent postoperative intestinal infection and bleeding, and place a gastric tube one day before surgery and fix it properly to prevent prolapse. [Postoperative education] 1.Lying position: change to semi-lying position after the blood pressure is stable. 2, diet: fasting, intestinal peristalsis can be removed after the recovery of the gastric tube, generally need 48 ~ 72 hours, if there is no abnormal abdomen, you can give high-calorie, high-protein liquid diet, and gradually transition to a normal diet. 3.Observe whether there is abdominal distension, the recovery of intestinal sounds and the time of exhaustion, and pay attention to the time of dislodgement of the Hongmen stent tube. 4.Fix the gastric tube properly, suck out the gastric juice to prevent abdominal distension, observe the color and amount of drainage fluid. 5.Do anal care (can be instructed family members to complete), timely cleaning of the anus with shy volt cotton balls to prevent stool contamination of the incision, to keep the anus clean and dry, to prevent infection. 6.If the child has recurrent enteritis or poor general condition and cannot undergo radical colorectal surgery, enterostomy should be performed. After surgery, observe whether there is blood flow obstruction in the intestinal tube at the stoma, and deal with abnormalities in time. Parents should be instructed to take good care of the skin around the stoma and apply oxidizing ointment to prevent skin erosion by digestive juices. Wait for three months or six months before performing radical surgery.