BAYD anti-algae and anti-mildew exterior wall paint is produced with a new anti-algae and anti-mildew formula and advanced production technology. It is also an exterior wall paint specially designed for the exterior wall decoration of villas, buildings, etc. It has good anti-mildew and alkali resistance and weather resistance and color retention properties, and can effectively inhibit the growth of algae and resist the erosion of the natural environment on the building for a long time, playing a good protective and decorative role on the building facade.