Disclosed are a graphene oxide cochlear implant electrode and a manufacturing method thereof. The graphene oxide cochlear implant electrode includes an electrode tip, an electrode carrier, electrode contacts, a first positioning ring, a second positioning ring, a boosting portion, an electrode wire, a loop electrode, a loop electrode wire and a wire array, herein the electrode tip is arranged at a foremost portion of the cochlear implant electrode, the electrode carrier is silica gel grafted with a graphene oxide, the electrode carrier wraps the electrode wire and semi-wraps the electrode contacts connected to the electrode wire one by one, and the electrode carrier is slightly curved as a whole; and the electrode wire is connected to the electrode contacts one by one and forms a spiral shape through the first positioning ring, the second positioning ring and the boosting portion. Methyl vinyl silica gel is adopted, and after activation treatment, the graphene oxide is grafted to the silica gel through a silane coupling agent trimethoxysilane, as to form a hydrophilic antibacterial polymer, not only the hydrophilicity of the silica gel is improved, but also the silica gel is endowed with an antibacterial property, and the cytotoxicity thereof is reduced at the same time.