1, the diet should be balanced, not partial food, not taboo, meat and vegetables, coarse and fine, the more varieties of food the better; 2, to exclude food containing toxins. Do not eat acidic, salt pickled, moldy, smoked, pigmented, flavored. Do not drink strong alcohol; Liu Peimin, Department of Oncology, Henan Provincial Hospital of Traditional Chinese Medicine 3, eat more natural, wild food, less artificially reproduced and refined food; 4, reasonable tonic can improve immunity. Certain tonic products such as ginseng, white fungus, red dates, etc. have direct or indirect cancer suppressing and strengthening effects; 5. Use more steaming, boiling and stewing in cooking, and eat less fried and deep-fried food as possible. Specifically, because the dietary allocation of breast cancer patients must rely on various nutritional elements in food. And the main problem of patients is nutritional disorder, improving patients’ nutrition is the most important measure in anti-cancer treatment. The proper dietary arrangement of patients can improve the body resistance, which is very beneficial to the treatment and recovery of patients. (1) Provide easily digestible and absorbable protein foods, such as milk, eggs, fish, soy products, etc., which can improve the body’s ability to fight cancer. Among them, milk and eggs can improve the protein disorder after radiotherapy. (2) Eat appropriate amount of sugar to supplement calories. Patients with high-dose radiation therapy can have their body’s sugar metabolism destroyed, glycogen decreases sharply, lactic acid in blood increases and cannot be reused; and insulin deficiency is aggravated. Therefore, it is better to supplement glucose. In addition, it is advisable to eat more sugar-rich foods such as honey, rice, noodles and potatoes to supplement heat. (3) Eat more foods with anti-cancer effect, such as turtle, mushroom, black fungus, garlic, seaweed, mustard and royal jelly, etc. (4) Vitamins A and C have the function of stopping cell malignancy and proliferation and increasing the stability of epithelial cells. Vitamin C can also prevent the general symptoms of radiation damage and increase the level of white blood cells; vitamin E can promote cell division and delay cell aging; vitamin B1 can promote patients’ appetite and reduce the symptoms caused by radiation therapy. Therefore, you should eat more foods rich in the above vitamins, such as fresh vegetables, fruits, sesame oil, cereals, beans and animal offal. (5) Patients with radiotherapy and chemotherapy are generally advised to eat cool food and cold drinks; however, patients with cold sensation are advised to eat hot food. (6) Diversify the diet, pay attention to the color, aroma, taste and shape, and promote the appetite of patients; cook food by steaming, boiling and stewing more often, avoid foods that are difficult to digest, and prohibit drinking alcohol. (7) For those who have difficulty in chewing, swallowing, digestion and absorption and lack of special nutritional elements after tumor surgery in various parts, different diets and supplementation of the lacking nutritional elements can be given according to the situation, and compound nutritional elements diet can be given when necessary to enhance the resistance of patients. Some people say that because soy contains estrogen-like substances isoflavones, so they do not dare to eat soy foods, in fact, it is not necessary, one of its content is not enough to produce harm, and the second its beneficial side far more than its relative disadvantages of a point. It is important not to choke and ignore its more beneficial effects on the human body because of the little hidden dangers. At present, many popular science articles report more examples of bias a little less than others, a very insignificant little effect exaggerated to the point that the diet can not be applied, often people are at a loss, such as Chinese medicine and proprietary Chinese medicine is also the case, because the pharmacology of such a role, so afraid to apply, generally speaking, as long as the doctor’s guidance, the correct dialectic, a short period of time to apply, side effects can basically be ignored. Of course, the major toxins with obvious side effects are not in the category we are talking about.