High maltose syrup is a kind of syrup made from corn starch with maltose as main content by double enzyme technique, it is a kind of colorless, transparent thich liquid with moderate sweet taste and fragrance of malt, which is used in candy, drinks and beer brewage, on the other hand, high maltose syrup is not metabolized depending on insulin of human body, so blood sugar level is increased slowly, furthermore, it has low calorie and will benefit the diabetes and adiposis patients.