Section I: Clinical characteristics Colorectal cancer includes colon cancer and rectal cancer, and those with lesions in the anus are also called anal cancer. With the development of the disease, there are often weakness, emaciation, malnutrition, diarrhea, constipation, abdominal distension, fresh blood stool, pus-blood stool, change in bowel habits, thin stool, deformation, incessant defecation and pain; in the late stage, patients may have intestinal obstruction, and may also appear emaciation, weakness, anemia and other cachexia. Section 2: Rehabilitation care 1, more fiber-rich food to keep the stool open. For example, add radish, hawthorn, tea, mint and other foods to the daily diet to promote intestinal peristalsis and prevent toxins from coming into contact with the intestinal wall for too long. 2. Consume more fresh vegetables, fruits, garlic, tea and other natural cancer suppressing foods. Properly supplement vitamins A, B, C, D, E and folic acid. Consume more pepper, pepper, anise, cumin, knife beans and cinnamon foods to enhance intestinal function, kill cancer cells and remove carcinogenic substances. At the same time, it is also necessary to abstain from drinking alcohol, reduce the intake of high-fat food, regularize meals and do not favor a certain kind of food. 3.Take more pasta. Avoid the intake of undigestible staple food; avoid spicy, pickled and baked food; avoid raw and cold, fruits should be taken warm with taking juice; avoid greasy dishes, avoid hard-to-digest meat and vegetables and dishes to be cooked and rotten; non-deficient cold body, should not drink alcohol. 4. Patients after surgery and radiotherapy should have regular review and take long-term supportive and anti-cancer Chinese medicine to prevent recurrence and metastasis. And kiwi, fig, apple, orange, grass carp, turtle, snapper, loofah, shiitake mushroom, barley, quail and pigeon can protect the side effects of chemotherapy. Section 3: Food selection 1. Choice of staple foods Job’s tear, adzuki beans, lentils, japonica rice, soybeans, sorghum, glutinous rice, wheat, oats, etc., contain anti-cancer active substances, and essential nutrients. 2.Selection of meat In recent reports, sea cucumber, oyster, chicken, octopus, beef, beef liver, steak, shark and other meat foods are rich in anti-cancer substances, which are respected at home and abroad. In recent years, it has been found that radish, eggplant, loofah, asparagus, beet, cabbage, carrot, cauliflower, rhizome, melon, kelp and soybean products contain active substances that inhibit cancer cells. 4.Fruit selection Longan, persimmon, plum, grapefruit, hawthorn, umeboshi, fig, sugar cane, watermelon, kiwi, gourd, etc. have the effect of inhibiting cancer cells and detoxification.