The invention relates to a production method of soybean organic concentrated protein, which comprises crushed soybean pulp obtained after degreasing is performed through a squeezing method. The soybean pulp is immersed in water, and dairy salt and soda powder are added simultaneously during the immersion; the solution is segregated from the mixture of powder and water; the solution is put into a concentration gradient regulator or a double-effect evaporator to perform concentration; the concentrated solution is sterilized through high temperature; isotrope is performed, and the solution is dried, to obtain light yellow albumen powder grain with protein level of 60 to 70 percent. The invention has the positive effects that the raw material is organic soybean pulp squeezed through a machine, acid, alkali and alcohol are not used during the production process, to ensure that the product is green and organic, the natural taste is maintained, the invention contains all the protein of 2S, 7S, 11S and 15S and oligosaccharide, the isoflavone content in the product is five times higher than the prior art, and the lecithine content is enhanced by nearly 50 percent. The natural nutrition ingredient of the soybean is maintained to the maximum degree. The production water consumption is small, the water resource is saved, no waste water is drained, and the environment is not polluted. The production technology is simple, and the production cost is low.