The invention discloses an extraction method of xanthate gum that is used for producing sauce products: xanthate gum fermentation liquor is added with weight proportion of 0.05 to 0.08 percent of citric acid, heated to 85 to 95 DEG C, insulated for 30 to 90min, stirred, and then cooled to 40 DEG C; the obtained solution is added with weight proportion of 50 to 70 percent, stirred for 30 to 90min,then solid and liquid is separated, and the xanthate gum is extracted for a first time; the solid xanthate gum obtained from the solid-liquid separation is added into ethanol, and volume ratio of ethanol concentration in the solution is controlled between 60 percent and 75 percent, and then the material is mixed and stirred for 30 to 60 min; then the xanthate gum is extracted for a second time; the solid xanthate gum obtained is dried at the temperature of 55 to 70 DEG C, grinded and packed, thereby obtaining the xanthate gum product that is used for producing the sauce products. The xanthategum of the invention, when added by weight proportion of 0.07 to 0.2 percent into sauce products, produces obvious adhesion-promotion effect, and is an ideal thickener for the sauce products.