The invention relates to a method for preparing a gasoline adsorption desulfurizer. The method comprises the following steps: uniformly mixing active ingredients, a carrier and water, molding, drying, and roasting to prepare the gasoline adsorption desulfurizer, wherein the active ingredients contain ZnO, NiO, NiCO3, CuO, K2CO3 and KNO3; and the carrier contains SiO2, Al2O3 and SBA-15. The invention also relates to the gasoline adsorption desulfurizer prepared by the method. By the use of the gasoline adsorption desulfurizer prepared by the method, octane number can be reduced, and desulfurization rate of the gasoline adsorption desulfurizer is raised. The desulfurization rate can reach up to 80% and above.