Polydextrose is a kind of soluble dietary fiber with good probiotic properties, and also has the special taste and texture of sugar. It can completely replace or partly substitute sugar. In order to reduce calorie as far as possible while not affecting the taste of food, also to making food healthier,we should use it. At the same time, as one of the seven major nutrients, it can stimulate intestinal peristalsis, also, its good for discharging faeces. Polydextrose also can prevent constipation, colorectal Hemorrhoids varicose veins cancer of lower extremities and so on.