The invention discloses a preparation method for anticorrosion art paper. The preparation method comprises the following steps that firstly, a sizing agent is prepared, wherein trees or waste paperis mixed and smashed, auxiliary materials are added, stirring, bleaching and beating are carried out, and the sizing agent is prepared for use; secondly, anticorrosion treatment is carried out, wherein corrosion inhibitor, sodium carboxymethylcellulose, titanium dioxide, fire retardant, an antibacterial agent and flexibilizer are added, and after stirring is carried out, pulp grinding is carried out; thirdly, paper forming is carried out, wherein the mixed sizing agent is subjected to drying, hot rolling, press polishing, drying, clipping and packaging, and the anticorrosion art paper is prepared. The prepared anticorrosion art paper can resist damage of corrosive chemical products in the environment to work of art, the preparation method is simple, operation is easy, the prepared paper is high in specific strength and high in specific modulus, resistant to chemical corrosion, low in coefficient of thermal expansion and moderate in permeability and can be widely applied to the field of art paper.