The invention relates to a steel structured passive house insulation structure. The structure comprises keels, vacuum thermal insulation plates and insulation decorative plates, wherein the keels areconnected with wallboards, and are arranged along the wallboards at intervals; the vacuum thermal insulation plates are arranged in the interval positions of the adjacent keels, and are connected withthe wallboards; the outer surfaces of the vacuum thermal insulation plates are leveled with the outer sides of the keels; and the insulation decorative plates are connected with the keels for covering the keels and the vacuum thermal insulation plates. The structure is reasonable in structural design; the keels are arranged out of walls, the vacuum thermal insulation plates are arranged between the keels, and the insulation decorative plates directly cover the keels and the vacuum thermal insulation plates, so that simple construction and once molding are achieved; and the vacuum thermal insulation plates are light, thin, high in integrity, excellent in connectivity with the walls, free of heat bridge and condensation hidden troubles, low in comprehensive production cost and suitable forpopularization and application.