The invention provides a preparation method of a rice bran calcium cerotate soap wax. The preparation method comprises the following steps: deoiling, soaking the deoiled but undecolorized rice bran wax into ethyl acetate, heating to melt, cooling, and cutting into slices for later use; oxidizing, heating the sliced rice bran wax and dilute sulphuric acid together to melt the rice bran wax, addinga sodium bichromate solution, constantly stirring and oxidizing, heating the oxidized rice bran wax into a liquid, then adding the dilute sulphuric acid, stirring, standing, layering, stirring while adding water, raising the temperature until the wax is completely melted, continuing to stir, standing and layering to obtain the rice bran wax cerotate; esterifying, heating and melting the rice branwax cerotate, raising the temperature, adding a polyhydric alcohol to have esterification reaction to obtain rice bran cerotate ester wax; saponifying, heating and melting the rice bran cerotate esterwax, and adding a calcium hydroxide solution to implement partial saponification to obtain the rice bran calcium cerotate soap wax. The invention further provides the rice bran calcium cerotate soapwax. The preparation method provided by the application is low in production cost, and the product is harder and has the performances of high temperature resistance and high gloss, and can substitutemouton wax soap.