The condition that often occurs when breast cancer patients undergo chemotherapy is more serious toxic reactions, such as gastrointestinal reactions, blood routine, liver and kidney function abnormalities, which bring great pain to patients and even affect the normal course of chemotherapy. In addition to the necessary drug prevention, diet therapy is a very important aspect. The following is the diet during chemotherapy for breast cancer: 1. 2. Eat more foods rich in anti-cancer ingredients, such as cabbage, Chinese cabbage and kale, which can prevent the induction of tumor cells by carcinogens in the body and inhibit the growth of tumor; garlic and onion contain allicin, which can play an anti-cancer role; tofu, soy milk, soybean 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 role. It is beneficial to breast cancer patients. Fresh fruits such as watermelon, kiwi, apricot, apple, pear, strawberry, etc. are rich in vitamin C and vitamin B, which have certain anti-cancer effects. Chemotherapy can often cause nausea, vomiting and other gastrointestinal reactions, so it is necessary to arrange the diet during chemotherapy for breast cancer reasonably. On the day of chemotherapy, the diet should be light and tasty; when chemotherapy is administered intravenously on an empty stomach, food should be eaten 3 hours before chemotherapy, when the food is basically digested and emptied, and dinner should be eaten later after chemotherapy 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.