After the diagnosis of bowel cancer, patients with no obvious contraindications to surgery and good heart, lung, liver and kidney functions can undergo surgery. Generally, local lesions, local metastases and tumor emergencies require surgery. 1. Local lesions: if the lesions of the patient are relatively limited, the patient’s physical condition is still relatively good, and the function of each organ can tolerate the surgery and anesthesia. At this time, surgery can be performed to remove the tumor to achieve the therapeutic effect. 2. Local metastasis: if the patient has limited metastasis in liver, lung and ovary, but the metastatic sites are not particularly numerous, in this case, surgical resection of these sites can be done. Resection in batches or together with intestinal tumor can achieve therapeutic effect. 3. Occurrence of tumor emergencies: if the patient has intestinal obstruction, intestinal perforation, intestinal hemorrhage and other tumor emergencies, then it is more dangerous. Surgery is needed to remove the tumor quickly in order to relieve these critical conditions. It is suggested that patients with intestinal cancer should go to the hospital in time to consult the doctor, combine with the actual situation, and let the doctor judge whether surgery can be performed or not.