Breast cancer is possible to eat soybeans in moderation. Most patients think that soy isoflavones have similar functions with estrogen and may aggravate the symptoms of breast cancer after consuming them, but in fact, phytoestrogens have a bidirectional regulating effect on the body’s own sex hormones. Therefore, breast cancer patients can consume soybeans, and moderate consumption of soybeans will not have too much effect on the body. Breast cancer patients should avoid eating too greasy, spicy and stimulating food, and can consume more fresh vegetables and fruits and food with high protein content, a reasonable diet can help patients increase nutrition. Soybeans contain high-quality plant protein, moderate consumption can also provide patients with daily nutrients. When consuming soybeans, you must pay attention to cook soybeans, consuming undercooked soybeans may cause abdominal or diarrhea, and should not be overconsumed, any food overconsumption may cause gastrointestinal tract burden.