The invention discloses a method for measuring tungsten trioxide contentof high-impurity tungstate. The method comprises the following steps: S1, co-decomposing a test sample with a small amount ofNaOH solution and hydrogen peroxide; S2, adding a precipitant for precipitating tungsten; S3, performing firing and weighing after filtering and washing; transferring residue obtained in the S1 and filtering paper into an iron crucible, placing the iron crucible on an electric burner for drying and ashing, cooling,adding sodium peroxide into a high-temperature burner for smelting to red and transparent, taking the mixture out, cooling slightly, pouring filtrate prepared in the step S3 into an original beaker in order to leach molten objects with the filtrate, leaching the molten objects out of the crucible with water, cooling, transferring into a volumetric flask, fixing the volume with water, mixing uniformly, standing for clarifying or dry filtering; transferring supernatant or filtrate, measuring tungsten trioxide content according to a thiocyanate method, and calculating the result. By adopting the method, the defect of remarkably high and unstable measuring result for the tungsten due to high impurity in the conventional tungstate analysis method is overcome.The method is simple, feasible, accurate and stable.