During the conservative treatment of bowel cancer obstruction, food is not allowed, fasting is needed, and intravenous nutrition is given when necessary. Conservative treatment for intestinal obstruction caused by many factors including intestinal cancer is generally enema, gastrointestinal decompression and intravenous nutrition. Before the obstruction is relieved, the patient needs to be strictly fasting and water fasting, so as not to aggravate the obstruction, aggravate the abdominal pain, and avoid intestinal necrosis and so on. During this period, if necessary, the patient needs to be given nutritional support therapy through the vein, supplementing the necessary water, electrolytes, fats, amino acids and other nutrients, but must be carried out under the guidance of the physician. After the intestinal obstruction is lifted, the patient can resume daily diet gradually, and in the early stage, light and liquid food is the main focus, avoiding spicy and stimulating food that is not easy to digest. For intestinal cancer, if the condition permits, surgery should be performed as far as possible to remove the tumor and clear the nearby lymph nodes. After the wound heals, chemotherapy (such as 5-FU, vincristine, etc.), targeted therapy (bevacizumab, cetuximab, panitumumumab, etc.) and other anti-tumor therapeutic measures are needed.