The invention discloses soybean 
peptide and an industrial production method and application of soybean 
peptide. The method comprises the steps of dissolving 
soybean protein isolate in 50-55 DEG C water, mixing and adjusting a pH value of a solution to be 4.2-4.8, centrifugally removing supernatant liquid, obtaining acid 
slurry, decomposing the acid 
slurry, adding the 50-55 DEG C water to the acid 
slurry, adjusting the pH value to be 7.2-7.4 with alkali, keeping at 53-58 DEG C, adding alcalase and flavourzyme, conducting compound 
enzymatic hydrolysis reaction, adding neutrase, continuing to react, adjusting the pH value to be 4.2-4.5, heating to deactivate 
enzyme, centrifugally separating, obtaining supernatant liquid, adding powdered 
activated carbon to the supernatant liquid, mixing, filtering to remove 
solid components, sterilizing, condensing, conducting 
spray drying, and obtaining a soybean 
peptide powder matter. The content of peptide in soybean peptide is 70-80%, and an 
aqueous solution is approximately colorless and transparent even if the 
dissolution concentration is 10% of the 
mass-volume ratio.