Dietary fiber plays an important role in human health. Soybean residue, a potential source of dietary fiber,has a broad application prospect. Through different treatment methods, the fiber properties and functions in soybean residue are improved, such as better solubility, stability and water absorption. It provides an opportunity for the food manufacturing industry to develop healthier, fiber-rich food products. However, the extraction and application of dietary fiber from soybean residue still face many challenges, such as extraction efficiency, quality stability and industrial production. This paper reviews the extraction and application technology of dietary fiber from soybean residue to promote its wide application in food industry and meet people's demand for healthy food.