▎ 摘　　要

NOVELTY - Exterior wall paint composition comprises a film-forming emulsion, nano titanium dioxide, graphene dispersion and water. USE - The composition is used in exterior wall paint (claimed). ADVANTAGE - The exterior wall paint has sterilizing and anti-algae effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the exterior wall paint comprising dispersing nano titanium dioxide in water to obtain a titanium dioxide aqueous solution, providing a first mixture, mixing the first mixture with the titanium dioxide aqueous solution to obtain a second mixture, mixing titanium dioxide with the second mixture to obtain a third mixture, and mixing a film-forming emulsion, a film-forming aid, a fluorosilane, and the third mixture to prepare the exterior wall paint, where the first mixture comprises graphene dispersion, a defoamer, a bactericide and a dispersant.