▎ 摘　　要

NOVELTY - Composite material electrode comprises an electrode substrate, and orderly formed on the surface of the electrode base porous graphene layer and beta -cyclodextrin film layer. USE - Used as composite material electrode. ADVANTAGE - The electrode: has good conductivity; has large specific surface area; can provide a large number of active sites; improve the transfer of charge cyclodextrin film; and exhibits a strong oxidizing the quercetin. DETAILED DESCRIPTION - INDEPENDENT CLAIMS is also included for: (1) manufacturing the composite material electrode comprising (1) mixing the graphene and graphene oxide dispersing in phosphoric acid buffer solution to obtain mixing liquid of graphene and graphene oxide, taking glassy carbon electrode as the working electrode, using a three-electrode system to the mixed liquid of the graphene oxide and graphene for cyclic volt-ampere scanning, obtaining the porous graphene modified glassy carbon electrode, (2) providing the porous graphene modified glassy carbon electrode into beta -tricalcium phosphate dissolving with buffer liquid of cyclodextrin, where the voltage is -2 to 2.5 V between electrochemical polymerization 6 section to obtain the composite material electrode; and (2) quercetin sensor comprises electrode composite material as working electrode.