▎ 摘　　要

NOVELTY - Preparing graphene-nano-silver hydrogel electrode comprises mixing graphene oxide solution, silver nitrate solution, and trisodium citrate solution and reacting to obtain graphene-nano silver hydrogel electrode, where the concentration of the trisodium citrate solution is 1.8-2.2 mmol/l, the concentration of the silver nitrate solution is 4-6 mg/ml, and the volume ratio of the graphene oxide solution, the silver nitrate solution and the trisodium citrate solution is (3-7):(0.1-0.3):(0.15-1.0). USE - The method is useful for graphene-nano-silver hydrogel electrode. ADVANTAGE - The method: produces product improves the conductivity; and is conducive to the biological detection of the electrode.