The invention belongs to the technical field of hard alloys, in particular to a manufacturing technology for a super-hard alloy. The technical aims that the super-hard alloy is high in hardness and low in breaking property are achieved. The technology comprises specific steps that firstly, production raw materials are prepared according to the proportion; b, grinding is carried out under the condition that air is isolated; c, sintering is carried out in a step-by-step manner at the different temperatures under the vacuum; and d, the temperature of the interior of a furnace drops to the normal temperature. The technology has the beneficial effects that silicon is used in the raw materials of the hard alloy, and the hardness of the alloy can be effectively improved; and meanwhile, a certain amount of aluminum oxide is added, so that the breaking degree of the alloy can be reduced, the bending-resisting strength of the alloy can be effectively improved, the quality of the hard alloy is improved, the production cost is saved, and the production efficiency is improved.