The invention provides a Y/ZSM-22/SAPO-34/ASA/MOF composite material and a preparation method thereof. The method comprises the following steps: preparing a ZSM-22/SAPO-34 molecular sieve slurry, and synthesizing a Y/ZSM-22/SAPO-34 composite molecular sieve by adopting a hydrothermal crystallization method; adding a surfactant and an alkaline aluminum source into the slurry containing he molecular sieve, and adjusting the pH value to obtain a solid product; washing, drying and roasting the product to obtain a Y/ZSM-22/SAPO-34/ASA composite material, uniformly mixing and stirring with a metal salt aqueous solution, and drying to obtain a metal-loaded Y/ZSM-22/SAPO-34/ASA composite material; adding alcohol and amide organic solvent into carboxyl-containing organic acid, and uniformly mixing to obtain organic mixture; and adding the metal-loaded Y/ZSM-22/SAPO-34/ASA material into the organic mixture, uniformly stirring, and reacting to obtain the product.