Preparation method of polyphenol selective ion exchange resin

The invention discloses polyphenol selective ion exchange resin and a preparation method thereof and belongs to the field of ion exchange resin. The polyphenol selective ion exchange resin is 2.70-3.55 mmol/g in weakly basic exchange capacity and is synthesized via the steps of 1) mixing well polyphenol and diethylamine in a non-polar organic solvent, and carrying out self-assembly reaction; 2) swelling chloromethylated styrene-diethenylbenzene copolymer by using an inert organic solvent, and removing swelling liquid; heating by water bath, adding the self-assembly product of the step 1) while stirring, and carrying out amination; 3) filtering, adding little mixed liquid of absolute ethyl alcohol and 10% by weight of sodium hydroxide solution for several times, and stirring and removing template molecules; 4) filtering, washing, extracting, and drying to obtain the polyphenol selective ion exchange resin. The preparation process of the polyphenol selective ion exchange resin is simple, the materials are easy