The invention discloses a preparation method of a metal ceramic composite filtering element. The preparation method comprises the following steps: firstly, welding an inner annular composite metal wire net and an outer annular composite metal wire net, which are concentric, respectively on a compact metal sheet, so that the compact metal sheet and the two composite metal wire nets form an annular clearance with an open end; then putting ceramic powder in the annular clearance, and compacting; and finally, welding a pipe nozzle on the opening end of the annular clearance, and sealing the open end of the annular clearance, thereby preparing the metal ceramic composite filtering element. The filtering element prepared by the method provided by the invention not only has the characteristics of high ceramic powder precision and good abrasion resistance, but also has the advantages of thermal shock resistance, fracture resistance and favorable permeability of the composite metal wire nets.