The invention discloses a molybdenum removal technology for calcium tungstate production process. The molybdenum removal technology comprises the following steps of S1, vulcanizing a calcium tungstate solution containing impurity element of molybdenum, so as to convert the impurity element of molybdenum into the corresponding thioic acid radical; S2, adding a precipitant into the vulcanized calcium tungstate solution, stirring for 0.5 to 2.5h at the temperature of 20 to 70 DEG C, and forming an organic compound precipitation together with the thioic acid salt containing the impurity element of molybdenum; S3, finally, adding an adsorbate, filtering and separating, wherein the filtering liquid is the impurity-removed calcium tungstate solution, and the filtering residues are the adsorbate and the organic precipitation; S4, increasing the acidity of the calcium tungstate solution to 140 to 160g/L, and adding tungsten powder into the solution; S5, repeating the steps S1 to S4 once. The molybdenum content of the existing calcium tungstate is 2% to 3.5%. The molybdenum removal technology has the advantages that the existing smelting impurity removal procedure is improved, so that the molybdenum content of the calcium tungstate is less than 0.5%; the impurity removal effect is good, the equipment is simple, the production cost is low, the process flow is short, and the operation is easy.