The invention relates to a method for preparing high-tungsten-content tungsten-zirconium alloy. The method comprises the following steps that (1) powder is prepared and mixed, tungsten powder and zirconium-titanium powder are mixed and then pelletized, and the proportion, by weight, of the added tungsten powder is 50%-70%; (2) pressing and sintering are carried out, pressing is carried out through a cold isostatic pressing molding press, and pressure is relieved in a graded mode; degreasing sintering is carried out through a high-vacuum resistance furnace, peeling is carried out through finish turning, and a consumable electrode is obtained; and (3) consumable electric arc melting is carried out for at least one time to obtain the high-tungsten-content tungsten-zirconium alloy with uniform ingredients. The consumable electrode is prepared through powder metallurgy, the strength of the electrode is high, and the phenomenon of slag falling is avoided in smelting; the distribution state of tungsten and other elements in the electrode is well improved through powder sintering, the uniformity of ingredients and the structure of cast ingots is facilitated, and therefore the smelted-state tungsten-zirconium alloy with the tungsten content reaching up to 70% is obtained. In addition, through the consumable smelting process, the alloy can be purified, inclusions are eliminated, and the density and the toughness of the alloy are further improved compared with powder-metallurgy-state alloy.