Fireproof interior wall coating with visible light catalysis function and preparation method thereof

The invention relates to the technical field of coatings and provides a fireproof interior wall coating with a visible light catalysis function and a preparation method thereof. The fireproof interiorwall coating comprises the following raw materials in parts by weight: 2-6 parts of a visible-light-induced photocatalyst, 15 to 18 parts of an emulsion, 25 to 40 parts of an intumescent flame retardant, 25 to 28 parts of inorganic pigment and filler, 0.5 to 1.5 parts of a coalescing agent, 0.35 to 0.5 part of a defoaming agent, 0.2 to 0.3 part of a thickening agent, 0.4 to 0.8 part of a sterilization and mildew prevention agent, 0.1 to 0.5 part of a dispersing agent, 25 to 27 parts of water and 0.3 to 0.5 part of an anti-settling agent, wherein the visible-light-induced photocatalyst is modified nanometer TiO2 with a grain size of 11.3 nm and a titanium dioxide mass loading amount of 25.5%, and the intumescent flame retardant is a mixture formed by mixing an acid source, a carbon sourceand an air source accordin