Breast cancer patients are plagued with what they can and cannot eat. Some doctors suggest that there are “no taboos”, while various schools of Chinese medicine have different opinions about dietary taboos. Some patients have the mentality of “I’d rather forbid more than indulge” and end up lamenting that there is nothing left to eat. Without adequate nutrition, post-operative recovery, recovery from chemoradiation therapy and long-term treatment are not beneficial. In fact, there are many foods that can be consumed, but what needs to be controlled is the “degree”, that is, the right amount. It is recommended that smoking and alcohol abuse are detrimental to any malignant tumor, and breast cancer is no exception, but a moderate amount of wine and beer is not included in the category of “alcohol abuse”. It is recommended that the daily intake of alcohol should not exceed 15 grams. Pickled foods are not good for malignant tumors, and breast cancer is no exception. However, some patients are obsessed with the fact that they had a bowl of pickle soup at last week’s dinner and ate some pickles for breakfast one day ……. There is no need to worry about this at all, but it is still the amount that needs to be controlled. The majority of breast cancer patients are suffering from absolute or relative high levels of estrogen in their bodies, so health supplements and foods that cause elevated estrogen are contraindicated. Health supplements such as placenta, royal jelly, propolis, bird’s nest, clam’s membrane oil, American ginseng, pollen, etc. are contraindicated; foods such as synthetic feed-raised chicken, feed-raised snapper, etc. are also contraindicated. High-fat and high-calorie foods such as fried foods can produce estrogen in the process of human metabolism and are also contraindicated. It is recommended to eat less lamb and beef because of the concern that “red meat” contains a large amount of saturated fatty acids or heterocyclic amines produced during the cooking process may be detrimental to breast cancer, but there is no conclusive evidence from current research. The same applies to health supplements, not the more the merrier. For example, wild ginseng, Korean ginseng, prince’s ginseng, cordyceps, ganoderma lucidum, maple, and wolfberry can all be taken, but it is better to choose according to the patient’s physical condition and the stage of treatment. For example, if the white blood cells are low during chemotherapy, you can take some sea cucumber. For example, if the white blood cells are low during chemotherapy, you can take sea cucumber. Milk, yogurt, eggs, beans, soymilk, seafood, mushrooms, spinach, chocolate, coffee and other foods are all allowed and are not contraindicated.