Abstract: Selenium is an essential microelement in human body with various important physiology functions. Various diseaseswould be caused if human body lacked Selenium. This study took the mung bean as raw material, enrich selenium in it by treatingmung bean with selenium solution of different concentrations. The results showed that the higher the selenium concentration was,the slower the mung bean grew. The bean would decay if selenium concentration was higher than 35ng/ml. Contents of seleniumin bean sprout were 27.03, 100.7, 155.6mg/kg after being treated respectively by selenium solution with different concentrationsof 20, 35, 50ng/ml. The SOD activity of bean sprout at first would increas as selenium concentrations increased, but reduced afterthe concentration of selenium solution was higher than 20ng/ml.

Key words: bean sprout, enrichment of selenium, selenium content, SOD