The main physiological function of colon is to absorb water and store food residues to form feces. The glands of colon mucosa can secrete thick mucus, which is alkaline and can neutralize the fermentation products of feces. When the colon is suffering from cancer, the physiological function is damaged, and the defecation function and the general condition are affected, such as diarrhea, difficulty in defecation, general wasting and other symptoms. If we do not pay attention to the diet and eat some indigestible food and cancer-promoting food, it will aggravate the progress of colon cancer and make the whole body exhausted. Patients with colon cancer must pay attention to their daily diet. Research proves that high-fat diet will promote the occurrence of intestinal tumors, especially polyunsaturated fatty acids, which can lower blood lipids but have a pro-cancer effect. Therefore, patients with colon cancer should not eat too much fat, with total fat accounting for less than 30% of total caloric energy, and the ratio of animal and vegetable oils should be appropriate. In other words, in a day’s meal, including the amount of fats in the food itself, plus the oil used in cooking, the daily fat should be less than 50 grams. Some friends are afraid of coronary heart disease, control animal fat is very strict, often to vegetable oil, or even do not eat animal oil, which will cause excessive peroxide in the body. The reason is that the carbon chain in vegetable oil is unstable and easy to oxidize, if you eat some animal fat properly, it will make the carbon chain stable and not easy to oxidize, and reduce the formation of free radicals in the body, so you must eat scientifically and pay attention to the reasonable ratio of fats and oils, it is recommended that the ratio of saturated fatty acids to polyunsaturated fatty acids and monounsaturated fatty acids is 1:1:1. You should pay attention to eating more dietary fiber-rich vegetables, such as celery, leeks Dietary fiber-rich vegetables can stimulate intestinal peristalsis, increase the number of bowel movements and take away carcinogenic and toxic substances from feces. If colon cancer bulges into the intestinal cavity and the intestinal cavity becomes narrow, the intake of dietary fiber should be controlled, because too much dietary fiber can cause intestinal obstruction. At this time, easy-to-digest, soft and semi-fluid food should be given, such as millet porridge, thick lotus root soup, rice soup, congee, cornmeal porridge, egg custard, tofu brain, etc. These foods can reduce the stimulation to the intestinal tract, pass through the intestinal cavity smoothly and prevent the occurrence of intestinal obstruction. Post-operative colon cancer patients, like other gastrointestinal surgery patients, should follow the doctor’s instruction to give diet, and the diet should start with thin and soft until the body gradually adapts to it before adding other diets. It should be noted that patients should not eat too much fat, and should reasonably match sugar, fat, protein, minerals, vitamins and other foods, and should have cereals, lean meat, fish, eggs, milk, all kinds of vegetables and soy products every day, and the amount of each kind should not be too much. This will replenish the various nutrients required by the body. If you cannot eat normally in the early stage after surgery, intravenous rehydration should be the main focus. Pay attention to strengthen nursing and diet nutrition after surgery to promote patients’ physical recovery. In early stage of bowel cancer, there are often changes in stool, sometimes constipation, sometimes diarrhea, blood in stool, and some patients have alternating constipation and diarrhea. Therefore, patients with early stage bowel cancer should pay attention to stool regulation and consume foods with more coarse fiber in the diet, such as potatoes, sweet potatoes, bananas, young leafy greens, etc. However, the processing should be meticulous to avoid stimulation of tumor parts by excessively rough food. Foods rich in fiber can make the stool have a de facto volume, which can prevent constipation and prevent diarrhea to a certain extent, and can ensure regular daily bowel movement. Due to the malignant growth of tumor invading into the intestine, patients with advanced bowel cancer have different degrees of bowel obstruction and reduce the capacity of food. At this time, patients should be given nutritious food with less coarse fiber, such as eggs, lean meat, soybean products, fine grains and tender leafy vegetables, etc.; they should also drink more honey water and eat bananas and duck pears, among which honey has the best laxative effect. Bowel cancer patients are forbidden to eat spicy foods, such as chili and pepper, which have stimulating effects on the anus and must not be eaten. Post-operative treatment must be consolidated to prevent and control its recurrence or metastasis, which is another key of tumor treatment and directly related to the degree of recovery after surgery. Since surgery can only remove visible tumor, it can do nothing for cancer cells remaining in blood and lymph. Surgery only removes local lesions and improves local environment, but does not fundamentally improve the body as a whole, which is the root cause of easy recurrence of tumor after surgery. For the post-operative situation, chemotherapy or other adjuvant treatments should be adopted. After completing the whole course of chemotherapy, post-operative follow-up should be paid attention to. Physical examination: every 3 months for 2 years after surgery; every 6 months for the 3rd-5th years Blood routine, blood biochemistry: same as physical examination CEA: if confirmed or abnormally elevated before surgery, review every 3 months for 2 years, and annually for the 3rd-5th years Abdominal/pelvic CT: 4-6 weeks after surgery as control; review annually for the next 3 years. Revisit at any time if clinically indicated abnormalities. Ultrasound: every 6 months for 3 years after surgery; intraluminal ultrasound every year after surgery Chest X-ray: every 6 months for 2 years after surgery; every year thereafter Colonoscopy: every year for 2 years after surgery; every 3 years thereafter if both times are negative; every year if polyps are found. We wish you a speedy recovery.