The invention relates to a honeycomb-like SCR denitration catalyst and a preparation method thereof, and belongs to the technical field of SCR catalysts. The honeycomb-like SCR denitration catalyst isprepared from the following raw materials: titanium dioxide, carboxymethyl cellulose, polyethylene oxide, fiber, deionized water, ammonium metavanadate, ammonium metatungstate, aqueous ammonia, lactic acid, cerium nitrate hexahydrate and praseodymium nitrate hexahydrate; wherein the relationship between the diameter R of the fiber and the average particle size d50 of the titanium dioxide is R=3 to 8d50; the relationship between the fiber length L at the diameter R and the particle size d of the titanium dioxide is L=5000 to 6000d, the value range of d is d10 to d90; the ratio of the added mass m1 of the fiber to the added mass m2 of the titanium white is m1: m2 = 0.06 to 0.15:1. The crack generation rate in the drying process of the honeycomb-like SCR denitration catalyst prepared by fiber optimization selection is significantly reduced, and the mechanical strength of the finished product is remarkably improved.