Burdock inulin is a kind of fructo-oligosaccharide and belongs to water-soluble dietary fiber. It is rich in burdock root. Researches have confirmed that burdock inulin has physiological functions of scavenging free radical,regulating intestinal balance,boosting immunity,antifatigue,reducing blood fat,preventing damage caused by alcohol and inhibiting cancer cell. And physiological functions about preventing diabetes and promoting the absorption of mineral substance and so on are needed to be further explored. We also need to do more researches about the development and application of burdock inulin in food. It is rich in burdock root. Researches have confirmed that burdock inulin has physiological functions of scavenging free radical, regulating intestinal balance, boosting immunity, antifatigue, reducing blood fat, preventing damage caused by alcohol and inhibiting cancer cell. And physiological functions about preventing diabetes and promoting the absorption of mineral substance and so on are needed to be further explored. We also need to do more researches about the development and application of burdock inulin in food.