Selenium can improve human immunity, promote lymphocyte proliferation and synthesize antibodies and immunoglobulins. Selenium has obvious inhibitory and protective effects on colon cancer, skin cancer, liver cancer, breast cancer and other cancers, and its intermediate metabolite methyl enol in the body has strong anticancer activity. Nutrients such as selenium, vitamin E, allicin, linoleic acid, germanium and zinc have synergistic antioxidant effect and increase antioxidant activity. At the same time, selenium can reduce and alleviate the toxicity of heavy metals. Selenium in human body is mainly obtained through food and diet. In China, except the land and farmland in Northeast China are rich in selenium minerals, other areas are selenium-deficient areas, so the selenium content in most of the grain produced is not enough for human body to absorb, so it is necessary to supplement selenium. The reason why people in Northeast China are big, strong and wild is related to the rich selenium absorbed by people in Northeast China. Selenium-enriched cups are suitable for families to eat and drink every day, and are also good gifts. Supplementing selenium unconsciously is safe, reliable and effective for a long time. Selenium in the cup is continuously provided to the human body for absorption along with the food and drink in the cup.