The invention relates to solid electrolyte paint for protection of a gas-phase cathode of a pipeline in an ocean platform atmospheric zone, and the solid electrolyte paint is applied to pipeline anticorrosion. The solid electrolyte paint is characterized by comprising a liquid A and a liquid B, wherein the liquid A is prepared from an aqueous epoxy solidifying agent, deionized water, an efficientinorganic pigment and filler dispersing agent, a rheological auxiliary agent, a mineral oil based defoamer, an efficient latex paint dispersing agent, hydroxyethyl cellulose, a dibasic acid ester mixture, montmorillonite powder and beta-Al2O3 powder, and the liquid B is epoxy resin; and when in use, the liquid A and the liquid B are mixed and solidified to form a film. By using the solid electrolyte paint, the protection of the gas-phase cathode of the pipeline in the ocean platform atmospheric zone can be achieved; the solid electrolyte paint has good constructability and storage stability; and the film of the solid electrolyte paint has an ionic conduction function and has the advantages of good physical properties such as adhesion, impact toughness and the like, even film layer, simpleproduction process and high cost performance and can be rapidly solidified.