PURPOSE: To obtain the catalyst for removal of nitrogen oxides, having a high activity less variable in the course of time, for a catalytic reduction by a method in which vanadium oxide and tungsten oxide are supported in a specific ratio on the surface of a titanium oxide carrier and then covered with cerium oxide.

CONSTITUTION: A denitrification catalyst for a catalytic reduction is manufactured by a procedure in which 1:5W1:50 (by weight) active composition consisting of 2W25wt% vanadium oxide, and tungsten oxide is supported on a titanium oxide- based carrier and then covered with 0.5W2.5wt% cerium oxide. The catalyst thus obtained is excellent in catalytic activity and durability in a wide range of temperatures as well as in the convertibility of SO2 into SO3 with less variation with time.