The invention discloses a method for preparing almond peptide from almond dregs. The method comprises the following steps: drying, crushing and sieving the almond dregs, adding deionized water into the almond powders, adjusting the pH value of the solution, stirring and leaching the solution at a certain temperature, centrifuging the leached solution and taking a supernate; adjusting the pH value of the supernate to 4.5 by using HCL, centrifuging the supernate and taking a precipitation layer for water washing; collecting and putting precipitates in an enzymolysis kettle, adding the deionized water in a solid-liquid ratio of 1:(10-15), stirring, mixing and heating the solution to the temperature of between 40 and 55 DEG C, adjusting the pH value of the solution to between 5 and 8 by using the HCL, adding proteinase in a mass ratio of proteinase to crude almond protein of (1-2):100 to perform enzymolysis reaction, adjusting the pH value of the solution to 5.5, increasing the temperature to 90 DEG C, keeping the temperature for 20minutes, cooling the solution to room temperature after enzymic inactivation treatment, centrifuging the enzymolysis liquid at a speed of 5,000r/min for 20minutes, taking the supernate, performing desalination treatment on the almond protein enzymolysis liquid by using cation exchange resin and anion exchange resin, and performing ultrafiltration separation to obtain almond protein peptide. The method for preparing almond peptide from the almond dregs has extensive application values.