Fructooligosaccharides (Fructo-oligosaccharide, referred FOS), oligofructose or cover and fruit oligosaccharides, the formula GF-Fn, n = 1-3 (where G is a glucose group, F is fructosyl), and sucrose and is 1-3 fructose base by sucrose β2,1 key town of South Gate fructose and sucrose-based combination of the three sugar, cane sugar and sucrose four over five sugar (respectively referred to as the GF2, GF3, GF4) and mixtures thereof. Industrialization oligofructose into yellow or yellowish, oligofructose is representative of functional oligosaccharides, is typical of prebiotic products. Product Features: 1, as the prebiotic oligofructose representatives, with two-way adjustable micro-ecological balance of the "Fishing" physiological functions. 2, low sweetness, low calorie. 3, laxative. 4, anti-caries. 5, to promote the absorption of minerals. Application: As a function of the factor can be applied to the following foods: dairy products: milk beverages, yogurt, lactic acid bacteria drinks, milk, etc; drinks: coffee, tea, soft drinks, milk, wine and other; confectionery: sweets, sweet cake, bread, fast food, Japanese sweets, jelly, pudding, etc. Other: processed meat, aquatic products, pickles, tofu. Oligofructose can also be applied to the field of livestock, such as adding feed young pigs, weaned calf feed and feed dogs can significantly reduce diarrhea and fecal preferred food FOS also diabetes.