PURPOSE: To ensure high activiy, excellent durability and the little oxidation of SO2 to SO3, by working gas containing NH3 after impregnating V sulfate to a titanium oxide carrier.

CONSTITUTION: The water solution of V sulfate (VOSO4 or VSO4) is impregnated to bodies produced by molding powdery titanium oxide (TiO2) in honeycomb, pellet-like or other shapes. The quantity of the impregnation of V sulfate to a TiO2 carrier at that time is 0.1W5 wt. % V atoms-especially, 0.35W1.35 wt. %. The TiO2 carrier, to which V sulfate is impregnated, is treated with matters, such as, inactive gas containing 0.05W100% NH3 at 300W520°C-especially, 370W450°C. or bodies obtained by mixing molding TiO2 powder and V sulfate at said rate are treated under the same condition as mentioned above. Catalysts for denitration obtained by these methods have 0.30W0.45 ml samll cavity volume per 1 kg catalysts, and their specific surface areas are 20W50 m2/g