The invention relates to a high-strength honeycomb type low-temperature SCR denitration catalyst and a preparation method thereof, and belongs to the technical field of environment protection and denitration catalysts. The preparation method comprises the following steps: mixing an aluminum oxide and titanium dioxide carrier, an active component solution, an auxiliary agent solution, glass fiber filaments, pseudo-boehmite, kaolin, carboxymethylcellulose, polyacrylamide, polyoxyethylene and glycerol, adding a nitric acid solution, aging, molding by a vertical hydraulic extruder, and finally drying and roasting to obtain the high-strength honeycomb type low-temperature SCR denitration catalyst. The obtained honeycomb type low-temperature catalyst has very strong mechanical property, low-temperature activity and sulfur poisoning resistance, and the removal rate of nitrogen oxides is greater than 90% under the flue gas conditions that the temperature is 120-150 DEG C and the SO2 concentration is 4000 mg / m<3>.