Eating more foods rich in anticancer ingredients shows that the following foods have certain preventive and therapeutic effects on breast cancer patients. (1) Chinese cabbage, Chinese cabbage, cabbage and other anticancer substances contain indole -3- methanol, which can prevent carcinogens in the body from inducing tumor cells and inhibit tumor growth; (2) Garlic and onion contain allicin, which can block the synthesis of nitrosamines, and at the same time contain vitamin C, vitamin A and other components, which can play an anti-cancer role; (3) Bean products such as tofu, soybean milk and soybean sprouts are rich in phytoestrogens, which can competitively inhibit the estrogen in the body and play an anti-cancer role. In addition, kelp, laver, tomatoes and other foods are rich in anti-cancer ingredients, and regular consumption is beneficial to breast cancer patients.