TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The photocatalyst-coated body comprises intermediate layer between the substrate and the photocatalytic layer; where the intermediate layer comprises solvent (preferably water), and silicone-modified resin (preferably acrylic silicone), ultraviolet absorbing agent, or organic antifungal agent. Preferred Components: The photocatalytic layer and photocatalytic coating liquid further comprises: copper (Cu) and silver (Ag) that are supported on the photocatalytic particles; surfactant (0-10 parts by mass); hydrolyzed condensation-polymerization product of titanium alkoxide or derivative of titanium alkoxide (0-10 parts by mass), as an optional component. The photocatalytic layer is obtained by heat drying at less than or equal to 200 degrees C, has a film thickness of 0.5-3 mu m, and is directly coated on the substrate. The photocatalytic particles are titanium oxide particles (preferably anatase-type titanium oxide). The inorganic oxide particles (preferably silica particles) has number average particle diameter of 5-40 (preferably 5-20) nm calculated by measuring a length of arbitrary 100 particles within a visual field of a scanning electron microscope with 200000x magnification. The hydrolyzable silicone is organosiloxane having at least one reaction group selected from alkoxy group, halogen group, and hydrogen group (preferably alkoxy group). The dried substance of the hydrolyzable silicone is hydrolyzed condensation-polymerization product of the hydrolyzable silicone. The substrate is a substrate at least a surface of which is formed of an organic material. EXAMPLE - A colored organic coated body was prepared by applying acrylic silicone containing carbon black powder on a sealer-treated siding substrate, followed by sufficient drying and curing. A photocatalytic coating liquid comprising (parts by mass): titanium oxide particles (4.5), silica particles (95.5), and surface active agent (6), was prepared. The colored organic coated body was spray-coated with the photocatalytic coating liquid, and was dried at 120 degrees C to obtain photocatalyst-coated body.