Colorectal cancer is a common disease in life, but most people do not know much about the symptoms of the disease in the middle stage. 1.If patients suffer from colorectal cancer, they should choose low-fat food, because high-fat food has certain pressure on our intestines, they should choose low-fat, low-salt and vitamin and mineral-rich food, which is beneficial to the treatment and recovery of colorectal cancer patients. 2.Diet during radiotherapy. During radiotherapy, colorectal cancer patients’ yin and blood are greatly injured, so they should mainly nourish yin and blood. Fresh vegetables and fruits should be chosen, meanwhile, tofu cooked with mushrooms and spinach soup with pork liver can be used. 3. For some fried food and pickled food, it is better for us to eat less, there are many carcinogenic substances in them, we should eat more anti-cancer food, colon cancer patients avoid eating cancer-inducing food and eat more anti-cancer food. According to medical experts after a lot of clinical experimental research, common anti-cancer foods include cruciferous vegetables (such as cabbage and cauliflower, etc.), radish, garlic, sour plum, soybean and beef, etc. 4.Selecting suitable meal environment and favorite food according to the hobbies of colorectal cancer patients can promote appetite and improve the absorption and utilization of food. 5.Patients with colorectal cancer should add more protein, because colorectal cancer consumes more protein in the body, so more protein can better ensure our body balance. Patients with colorectal cancer should choose 20% more protein and calories than normal people need. If malnutrition has developed, more protein can be supplemented. The best protein intake is vegetable protein and some animal protein.