Abstract:Stachyose is a new functional oligosaccharide. Foods containing stachyose were approved as the special health care foods in many countries. The preparation method of stachyose was introduced in this review. Its physiological functions such as stimulating the growth of bifidobacteria, regulating intestinal flora and lowering blood fat and pressure were reviewed. The application of stachyose in food, pharmaceutical, cosmetic and feed were discussed.