▎ 摘　　要

NOVELTY - Preparing conductive hydrogel comprises (i) adding graphene oxide to water, ultrasonically dispersing, adding ascorbic acid to heat and reduce under the heating and stirring to obtain uniformly dispersed reduction-oxidation graphene suspension, (ii) adding acrylamide and acrylic acid in the reducing graphene oxide suspension liquid, after dissolving, adding initiator and crosslinking agent, putting into oven to trigger the free radical aggregate, obtaining the conductive hydro-hydrogel based on acrylimide-acrylic acid copolymer/graphene composite. USE - Preparation method of conductive hydrogel used as flexible sensing material (claimed). ADVANTAGE - The conductive hydrogel has improved mechanical property, conductivity and sensing sensitivity, and has the potential of being applied to the flexible sensor.