The invention relates to a preparation method of a novel corrosion-resisting zinc cathode plate. The preparation method comprises the following steps: pre-treating a common zinc cathode plate; removing impurities and grease dirt on the surface of the cathode plate; meanwhile, damaging dense aluminum oxide on the surface of the cathode plate; putting the cathode plate into an acidic oxidization groove for carrying out oxidation treatment to obtain one layer of modified dense oxide thin film; then putting the modified dense oxide thin film into a potassium permanganate solution and carrying out oxidization to seal micro-holes; and carrying out curing treatment on the sealed cathode plate at a high-temperature condition to obtain the novel corrosion-resisting zinc cathode plate. According to the preparation method of the novel corrosion-resisting zinc cathode plate, provided by the invention, the zinc stripping efficiency can be remarkably improved and the service life of the cathode plate is prolonged; and the anti-knocking performance of the cathode plate is improved and an application prospect is wide.