Breast cancer patients are generally weak, so it is necessary to increase the intake of protein and sugar during chemotherapy, and to eat less high-fat and high-cholesterol foods, especially to ensure the intake of protein, and to eat more lean pork, beef, chicken or fish, etc. During chemotherapy, the intake of protein and sugar should be increased appropriately, and the intake of high-fat and high-cholesterol foods should be reduced, especially to ensure the intake of protein, such as lean pork, beef, chicken or fish. The diet should be diversified, with meat and vegetables, acid-base balance, and pay attention to the color, aroma and taste of food. Patients who are anorexic can eat some appetizing foods such as hawthorn, radish and kumquat to increase their appetite. 2.Eating more foods rich in anti-cancer ingredients research shows that the following types of foods have certain preventive and curative effects on breast cancer patients. (1) Cabbage, Chinese cabbage and kale contain indole-3-methanol, an anti-cancer substance, which can prevent the induction of tumor cells by carcinogens in the body and inhibit the growth of tumor. (2) Garlic and onion contain allicin, which can block the synthesis of nitrosamines, as well as vitamin C and vitamin A, which can play an anti-cancer role. (3) Tofu, soy milk, soy sprouts and other soy products are rich in phytoestrogens, which can competitively inhibit the effect of estrogen in the body and play an anti-cancer effect. (4) Asparagus contains histone, which has been proven to be effective in controlling the growth of breast cancer cells. In addition, seaweed, nori and tomatoes are rich in anti-cancer ingredients, which are beneficial to breast cancer patients when consumed regularly. Dendrobium and ginsenoside Rh2, although more difficult to buy, can really shrink the cells and increase the effect of chemotherapy. 3.Eating some fresh fruits properlyFresh fruits such as watermelon, kiwi, apricot, apple, pear and strawberry are rich in vitamin C, vitamin B and other vitamins, which have certain anti-cancer effects. Dates not only contain hawthorn acid and other anti-cancer ingredients, but also have therapeutic effects on the reduction of white blood cells and platelet reduction caused by chemotherapy, so breast cancer patients can often eat dates during chemotherapy. 4. Reasonable arrangement of diet and chemotherapy chemotherapy can often cause nausea, vomiting and other gastrointestinal reactions, so the diet should be reasonably arranged during chemotherapy. On the day of chemotherapy, diet should be light and tasty; by intravenous chemotherapy is carried out on an empty stomach, so should eat 3 hours before chemotherapy, when the food has been basically digested and emptied, after the end of chemotherapy dinner later, to reduce the symptoms of nausea and vomiting. When taking chemotherapy drugs orally, it is better to take them half an hour after meals, when the blood concentration reaches its peak, when there is already a fasting state, the digestive tract reaction will be lighter. Chemotherapy vomiting can be held in the mouth ginger slices, for anti-vomiting will help.