A method for extracting red jujube polyphenol comprises the following steps: 1) crushing red jujube peels and/or jujube pi to be put into a closed container, adding a 2-4 mol/L NaOH mixed solution comprising 1% of Vc in mass ratio and 10 mmol/L EDTA according to the solid-to-liquid ratio of 1:(10-15) (w/v) to form a reaction liquid, filling nitrogen gas in the container, and then sealing; 2) transferring the sealed container into a shaking table at the temperature of 25 DEG C to shake; 3) unsealing the sealed container, quickly adjusting the pH value of the reaction liquid in the container to be 2.0 through 6 mol/L HCl; conducting repeated extraction through ethyl acetate with the same volume as the reaction liquid till ethyl acetate phase is colorless, and collecting and combining the ethyl acetate phase; 5) evaporating under the condition of decompressing and condensing at the temperature of not larger than 40 DEG C to remove ethyl acetate in the ethyl acetate phase so as to obtain a red jujube polyphenol extractive. The method for extracting the red jujube polyphenol is simple in process and high in extraction ratio.