Small intestine necrosis can show the following symptoms: 1, abdominal pain, patients will have continuous abdominal distension, sometimes painful; 2, fever, because after small intestine necrosis, there will be many toxins for release, while digestive juices may also enter the abdominal cavity, which will cause an increase in body temperature, or even chills, high fever symptoms, some patients will also lead to shock; 3, there will be obvious pressure pain in the abdomen, sometimes accompanied by 4. gastrointestinal symptoms, such as nausea, vomiting, abdominal distension, poor exhaustion and defecation, sometimes it is difficult to exhaust and defecate, and the abdomen will be obviously bulging, with a drum sound on percussion. Therefore, when there is obvious discomfort, you need to go to the general surgery or gastroenterology department of the hospital for examination as soon as possible. If necrosis of the small intestine is considered, the necrotic intestine should be surgically removed and intestinal anastomosis should be performed as soon as possible, and anti-inflammatory and nutritional support should be given.