The waste catalyst is used as carrier which is soaked separately in the water solutions or in aqua ammonia solutions of soluble cobalt salt, ammonium molybdate and soluble salt of alkalimetal or soaked in the composed mixture solutions of above compounds, then the product is obtd. after stoving. Its advantages are: fine strength of the regenerated catalyst, high activity, decrease of the prepn. procedures of the catalyst, lowering the productive cost, decreasing the environmental pollution and the regenerated catalyst being capable of satisfying the demand of industrial production.