The invention relates to the preparation of chemical catalysts, and aims at providing a preparation method of a catalyst for the catalytic combustion of polycyclic aromatic hydrocarbon. The preparation method comprises the following steps of dissolving CeCl3 7H2O in ethylene glycol, then adding FeCl3, PVP (Polyvinyl Pyrrolidone), acetic acid and tetramethylammonium hydroxide, regulating pH (potential of Hydrogen) with strong ammonia water, and then agitating; transferring into an oil bath, heating and reacting; cooling to room temperature, then adding acetone, dispersing a solid obtained by centrifugation in acetone-ethanol mixed liquor, and centrifuging again; drying and calcining an obtained solid to obtain a colloidal assembly pellet; adding an HFAU molecular sieve and the colloidal assembly pellet into deionized water, ultrasonically dispersing and agitating; separating an obtained another solid, and drying and calcining the obtained another solid to obtain a final catalyst product. The catalyst prepared by the preparation method is favorable in dispersity and is beneficial to pollutant adsorption. The catalyst can provide more active sites, combines a transition metal oxide with a molecular sieve and effectively overcomes defects of being easy in poisoning and being not resistant to high temperature, and the like. Preparative raw materials are easily obtained; a process is simple and convenient; the catalyst can be used for the purification treatment of industrial organic waste gas or polluted organic matter of soil.