Inthisstudy,aqueousenzymaticsoybeanresidueswereusedastherawmaterial,the methods of microwave-assistedacid-solublealkali sinktechnologytoextractsoybeaninsolubledietaryfibers(IDF).In order to make sure the optimal conditions,this paper researched on the extraction yield of IDF from aqueousenzymaticsoybeanresiduesby single factor experiments and response surface methodology.