The invention discloses a preparing method for adopting vacuum self-consumption arcs to smelt CuFe alloy materials. The preparing method comprises the following steps that firstly, raw material mixingis conducted, raw materials include, by weight percent, 70%-30% of Cu and 30%-70% of Fe, the needed raw materials are weighed according to the proportion and mixed in a mixing machine, and the mixingtime is 2-4 h; secondly, pressing is conducted, the mixed powder obtained after mixing is arranged in a rubber sleeve to be mechanically vibrated for 30s-60s, then, material rolling is conducted for3-6 min, reverse material mounding is conducted 3-5 times, the treated mixed powder is pressed through an isostatic cool pressing method, the pressure ranges from 150 MPa to 300 MPa, and the pressuremaintaining time is 3-10 min; thirdly, sintering is conducted, a pressed consumable electrode is arranged in a vacuum sintering furnace to be sintered, the highest sintering temperature is controlledto range from 800 DEG C to 1,080 DEG C, the heat preservation time is 30-240 min, and the vacuum degree is larger than 5 pa; and fourthly, smelting is conducted, the sintered consumable electrode is arranged in a vacuum self-consumption arc smelting furnace to be smelted, and the smelting current is 1,000-4,000 A. According to the preparing method, the gas content is low, few inclusions exist, structure components are uniform, and Cr and Fe enrichment and other macroscopic and microscopic defects are avoided.