Sea cucumber can be eaten during chemotherapy for breast cancer, and eating sea cucumber during chemotherapy for breast cancer can effectively improve the patient’s resistance and immunity, promote the patient’s recovery, and make him/her better tolerate chemotherapy. Usually, because chemotherapy drugs will have gastrointestinal reaction, nausea, vomiting discomfort symptoms, so in the diet need to avoid too greasy, spicy stimulating food, at the same time, too greasy, spicy stimulating food as a high-risk factor for the development of breast cancer, breast cancer patients should try to avoid eating. Therefore, for the period of breast cancer chemotherapy, light and soft food with high protein and low fat is usually advocated, and more fresh vegetables and fruits rich in vitamins and fiber are consumed. Sea cucumber, as a kind of seafood, is rich in high-quality protein and does not contain fat, so for breast cancer chemotherapy patients, it can effectively improve their nutritional status and immunity, thus promoting the recovery of the patient’s body.