The invention relates to a method for preparing an alcohol catalyst by using coke-quenching recovered gas.The method includes the steps that an aluminum oxide, a pore-forming agent and precious metals and/or precious metal oxides are mixed to obtain a material I, a nitric acid solution is added to the material I to obtain a material II, and then the material II is sequentially subjected to extrusion molding and calcination to obtain a carrier; ammonium tetrathiomolybdate is dissolved in water to obtain impregnation liquid I, chromium nitrate and potassium carbonate are jointly dissolved in water to obtain impregnation liquid II, the carrier is put in the impregnation liquid I, standing is performed, then the carrier impregnated by the impregnation liquid I is dried and then is put in the impregnation liquid II for standing, and the impregnated carrier is obtained after drying; the impregnated carrier is calcinated at the temperature of 500-800 DEG C and under inert atmosphere for 2-6 hours to obtain the alcohol catalyst prepared by using the coke-quenching recovered gas.The method for preparing the alcohol catalyst by using the coke-quenching recovered gas is simple and easy to operate, the industrialization is achieved, the production cost is low, the method is beneficial to large-scale promotion, and the obtained catalyst is high in activity and good in stability.