Clinically, there is no strict rule that rectal cancer patients cannot eat eggs, only that they should not be consumed in excess, and 1-2 eggs per day is appropriate. Rectal cancer is a consumable disease, and eggs are rich in protein, lecithin, amino acids and other nutrients, so their moderate intake is good for patients to replenish physical energy and maintain nutrition. However, excessive consumption of eggs is not recommended because the intestinal function of rectal cancer patients is weak, and some patients may also have bile duct blockage and abnormal liver metabolic function. In addition, rectal cancer requires multiple means of comprehensive treatment and a long treatment period, so rectal cancer patients should pay attention to a diversified diet, not to be partial or picky, to achieve balanced nutrition, to maintain the body’s energy needs, and to focus on a high-protein, high vitamin, high-calorie and easy-to-digest diet. However, it should be noted that rectal cancer patients should avoid eating greasy and spicy stimulating food to avoid increasing the burden of stomach and intestines, avoiding barbecue, deep-fried, hot pot and pickled food, and avoiding drinking alcohol. Patients’ dietary principles can be flexibly adjusted according to their defecation behavior. If constipation exists, it is necessary to take more water and increase fiber intake; if loose stool is present, it is necessary to reduce water intake and fiber intake. If there is no change in bowel movement after adjustment, timely follow-up is required.