Selenium (Se) is an essential trace element of human body. Selenium deficiencyis a major cause of cancer, cardiovascular and cerebrovascular diseases, diabetes,gastrointestinal disease, cataracts and other diseases for human being in recent yearsalong with the research of selenium and health in depth step by step and improved thepeople's health consciousness. Functional food and drugs with selenium has been paidmore and more attention. In general, inorganic selenium, suach as sodium selenateand sodium selen...