The survival time after resection of intestinal necrosis is related to the benignity and malignancy of the original disease and the degree of intestinal necrosis resection. If the intestinal necrosis caused by benign disease is resected, the recovery after intestinal resection is relatively good, basically does not affect the normal life expectancy, and can be cured. If the intestinal necrosis is caused by malignant tumors, due to the possibility of recurrence and spread of malignant tumors, then even if the intestinal necrosis segment is resected, the survival time may vary from half a year to one year. If the scope of intestinal necrosis is small, the scope of resection is small, pay attention to recuperation after resection, and the recovery is better, basically it will not affect the patient’s life expectancy, and the patient may survive for 10 to 20 years, or even longer. If the length of intestinal necrosis resection is longer, it may affect the absorption of nutrients in the later stage, and the survival time may be 2~3 years, the specific time needs to be determined according to their own conditions. When patients with intestinal necrosis resection, they need to pay strict attention to diet, do not eat spicy and stimulating food, so as not to cause re-injury, and actively cooperate with the doctor for care, postoperative regular checkups, so as not to cause adverse consequences, affecting the survival period.