Abstract:Beans are an important kind of food crop with rich nutritional content，known for their heat-clearing and detoxifying properties as well as their benefits for the spleen and stomach health.Insoluble dietary fiber（IDF）is one of the important active ingredients in leguminous crops.It is primary present in legume processing by-products，such as bean meal and seed coat.IDF has various biological activities and holds substantial potential for development in the food，pharmaceutical，and functional food.This article offered a comparative analysis of extraction and purification methods for IDF from legumes and summarizes its physicochemical properties，functional features and application in flour，meat and dairy products.Our work may provide a reference for both theoretical research and developmental application of IDF from legumes.