▎ 摘　　要

NOVELTY - Modifying surface of medical metal material involves pretreating medical metal material, adding zinc nitrate, zinc acetate and graphene oxide to solvent and uniformly mixing to obtain electrophoretic deposition electrolysis liquid, in which mass ratio of zinc nitrate to zinc acetate is 1:1. Graphite is used as anode, and the metal material after pretreatment is used as a cathode, and is placed in an electrophoretic deposition electrolyte having constant voltage of 20-120 volt for 20-60 seconds to obtain graphene oxide modified layer on surface of medical metal material. USE - Method for modifying surface of medical metal material. ADVANTAGE - The method enables to provide short deposition time of the graphene oxide modified layer obtained on the surface of the medical metal material, and improved binding strength and corrosion resistance of the graphene oxide and the magnesium alloy matrix.