Abstract: Soluble dietary fiber (SDF) is highly focused by national researchers widely over the world because of its physiological functions such as the prevention of gastro intestinal disease, coronary heart disease, and diabetes. Improving the value of SDF and physicochemical properties has been became an important study in the field of food. Based on both national and international research conclusions in resent years, this paper reviewed the developments of dietary fiber’s modification technologies treated by chemical, biological, physical and combined technology, which can be giving suggestion for providing theoretical references to the researchers in the relative fields.