The invention provides a composite catalyst for catalytic modification of methanol gasoline. Oxides, and / or phosphides, and / or silicides, and / or borides of one or more of Cr, W, Mo, Co, Ni, Zn, Cd, Cu, Pt, Sn, Sb, Zr and Sr elements are taken as active components to be loaded on a porous carrier to prepare the catalyst. According to elements, the active components account for 0.5 to 3 percent of the weight of the catalyst carrier. The catalyst can also load an auxiliary catalyst which is oxides of one or more of K, Mg and Mn, and according to elements, the auxiliary catalyst accounts for 0.2 to 1.5 percent of the weight of the catalyst carrier. The catalyst is prepared by the isometric immersion method, and mainly applied to low-proportion methanol gasoline, optimally the catalytic modification of two types of methanol gasoline of M15 and M30.