Object of the present invention is to provide visible light-responsive photocatalyst coating material which can form a coating film exhibiting superior allergen inactivation property through irradiation of visible light. The visible light-responsive photocatalyst coating material comprises: photocatalyst material having visible light-activity composed of metal oxide particle with divalent copper salt supported on the surface thereof, said metal oxide particle having optical semiconductor-characteristics and potential of valence band of said metal oxide particle being 3[V] or more (vs. SHE, pH=0)； binder component including component having siloxane bond or component forming siloxane bond through reaction； and chloride ionic compound. When visible light is irradiated to the coating film, the metal oxide particle exhibits photocatalyst activity in the presence of the copper-divalent ion and chloride ion, thereby significantly high allergen inactivation property is exhibited. Additionally, it can prevent the separation of the photocatalyst coating material from the coating film.
