Soybean dietary fiber can't replace corn starch, and their functions and effects are different. Soybean dietary fiber mainly refers to the general name of macromolecular sugars that cannot be digested by human digestive enzymes, mainly including cellulose, pectin, xylan, mannose and so on. Although dietary fiber can not provide any nutrition for human body, it has important physiological functions for human body. Dietary fiber can obviously reduce plasma cholesterol, regulate gastrointestinal function and insulin level. Corn starch, also known as corn starch, also known as corn flour, commonly known as Liugu powder. A yellowish white powder. It is made by soaking corn with 0.3% sulfurous acid, crushing, sieving, precipitating, drying and grinding. Ordinary products contain a small amount of fat and protein. Strong hygroscopicity, up to more than 30%. Corn starch helps to lower the level of human cholesterol and reduce the occurrence of atherosclerosis. Corn starch contains minerals such as calcium and iron, which can prevent and treat osteoporosis and iron deficiency anemia, as well as hypertension and coronary heart disease.