The invention relates to a polyamide wax slurry rheological auxiliary agent with easy dispersity and a preparation method thereof, belonging to the dope field. The auxiliary agent comprises the following components according to the percentage by weight: 20 percent of polyamide wax, 15-70 percent of aromatic series hydrocarbon solvent, 5-35 percent of alcohols solvent, and 3-30 percent of esters solvent. The method comprises the following steps: aromatic series hydrocarbon solvent is added into a reactor, and the polyamide wax micro powder is slowly added into the reactor at the rate of 2-4m/s, and then the rate is regulated to 6-11m/s; the polyamide wax micro powder is evenly dispersed, added with the alcohols solvent and the esters solvent which are frozen to under minus 10 DEG C, evenlystirred and stands at the room temperature; and after the polyamide wax is fully activated, light yellow polyamide wax slurry is obtained. The polyamide wax adopted by the invention has better activation performance and rheological property, causes that the polyamide wax is fully activated at the room temperature, increases the easy dispersity performance of the polyamide wax slurry, and can be dispersed in coating systems in the condition of middle to low shear rate and in the shorter time; and the fineness of dispersion is less than equal to 17.5 microns.