Abstract: Based on experimental studies on the mechanical,electric,hydroscopic,and thermal properties of the superfine soybean protein mid-fiber,MATLAB software was applied to plot the curve with the related experiment data and investigate the spinning and weaving processes of the blended fabric of superfine soybean protein mid-fiber and superfine cotton type polyester fiber.The light reflection and absorption properties in the visible spectrum of the bleached fabric was researched and the characteristics affecting the fabric′s style such as stretching,bending,wrinkling,hydroscopicity and air permeability under low load were also studied.The present work has given a reference for the improvement of the soybean protein fiber and its product development.