Eat some foods containing selenium after breast cancer chemotherapy, such as seafood, mushrooms, garlic, ginkgo and so on. Adjuvant therapeutic effect of selenium. (1) Reduce the side effects of radiotherapy and chemotherapy; (2) Reduce the drug resistance of cancer cells and improve the curative effect; (3) Suppress the metastasis of cancer cells; (4) Combine chemotherapy drugs to improve the cure rate of cancer. You can also try selenium supplementation. For example, you can eat some selenium-supplemented products: Tihengjian brand selenium Weikang chewable tablets, and the breast cancer diet that is very helpful for cancer patients to recover after radiotherapy and chemotherapy should be diversified.