The invention relates to a monolithic 
flue gas denitration catalyst with 
silicon-based 
ceramic as a carrier and a preparation method thereof, which pertains to the fields of 
atmospheric pollution treatment technology and 
pollution-free catalyst materials. The monolithic 
flue gas denitration catalyst is characterized in that the 
silicon-based 
ceramic is taken as a first carrier, active 
silicon dioxide is taken as a second carrier, a proper amount of one or a plurality of 
transition metal oxides of Mo, W, Cu, Fe, Zr, La, and the like, is added to CeO2 as the 
active components. The preparation method adopted is as follows: the silicon-based 
ceramic is immersed into 
alumina sol, dried and baked to prepare an active 
silicon dioxide coating, and then immersed into Ce(NO3)3 solution to prepare an active CeO2 
coating. Compared with the prior art, the preparation method of the invention not only improves the mechanical and 
heat stability of the catalyst carrier, and reduces the load of the 
active components, but also protects the environment without secondary 
pollution, enhances the activity of the catalyst, and increases the activity temperature window.