TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The binder (C) contains aluminum nitrate as a crystallization inhibitor. The photocatalytic microparticles (C) are titanium oxide microparticles having anatase type crystals as main component. Preferred Composition: The coating composition further contains mixture of ethylene glycol monoalkyl ether or ethylene glycol monoalkyl ether and 4C or less monoalcohol as solvent. Preferred Film: The intermediate film is organic-inorganic composite inclination film. Preferred Properties: The coating film has water contact angle of less than 3degrees by irradiating 1 mW/cm2 ultraviolet ray. The coating film has water contact angle of more than 10degrees when neglected in dark place for 80 hours or more. The water contact angle of coating film becomes more than 10degrees within 1500 hours, in promotion endurance test by sunshine weather meter. EXAMPLE - Titanium tetra isopropoxide (in g) (10) was dropped in ethyl cellosolve (19.9), and mixed solution of 60 mass% nitric acid aqueous solution (1.68), water (0.61) and ethyl cellosolve (7.8) was added and stirred at 30degreesC for 4 hours. Further, ethyl cellosolve (77.6) was added, and binder liquid (L) having solid content concentration of 2.38 mass% was produced. The obtained binder liquid (L) (44.12), ethyl cellosolve (94.11) and n-propanol (133.59) were mixed. Liquid mixture of 60 mass% nitric acid aqueous solution (0.81) and water (20.4) was dropped. Then, PC-201 (titanium oxide particles dispersion liquid of anatase type crystals, having solid content of 20.7 mass% and average particle diameter of 20-40 nm) (1.45), and Snowtex IPA-ST (colloidal silica having solid content of 30 mass% and average particle diameter of 10-20 nm) (5.5) were added, and photocatalyst coating liquid having specific gravity of 0.86 was obtained. The obtained coating liquid was applied on film with organic-inorganic composite inclination film, and a photocatalyst film having thickness of 45 nm was formed. The formed coating film had favorable snow-sliding capability over long period of time.