Intestinal necrosis can present the following symptoms: first, pain, the patient can have persistent abdominal distension, or intestinal colic, sometimes the pain is unbearable. Secondly, fever, which can be characterized by elevated body temperature, or even chills and high fever. Third, gastrointestinal symptoms, such as nausea, vomiting, poor defecation, or even difficulty in defecation and bowel movement. Fourthly, some patients may have symptoms of progressive drop in blood pressure or even shock, and some patients may have a markedly distended abdomen, often caused by intestinal necrosis leading to intestinal obstruction. When there are obvious symptoms in the abdomen, it is necessary to go to the general surgery department and digestive surgery department of the hospital as soon as possible to improve the relevant examinations, such as blood routine, C-reactive protein, abdominal ultrasound or abdominal CT, etc., and according to the results of the earliest possible surgical treatment.