▎ 摘　　要

NOVELTY - Method for preparing graphene structure color film involves (i) using the template sacrificial method, using colloidal particles and biocompatible precursors to prepare structural color inverse opal hydrogel film and (ii) pouring graphene hydrogel precursor into the structural color inverse opal hydrogel film obtained in the step (i), and curing to obtain graphene structure color film, where graphene hydrogel prepolymer is prepared by dispersing the reduced graphene oxide solution in the hydrogel prepolymer solution. USE - The method is used for preparing graphene structure color film, which is used as a flexible electronic material (all claimed). ADVANTAGE - The method is simple and cost-effective, and does not require large-scale monitoring equipment. The prepared graphene structure colored film can not only feed back electrical signals, but also exhibit color changes.