The invention discloses a method for slicing heavy leather blade paraffin and relates to a method for slicing plant paraffin. Operating procedures include fixing, dehydrating, transparentizing, paraffin infiltration, embedding, slicing, dewaxing, dyeing and mounting. In the splicing process of the heavy leather blade paraffin, a fixing agent, a dehydrating procedure, a transparentizing procedure, a paraffin infiltration method, a dyeing method and mounting are improved, i.e., selection of the fixing agent, determination of the dehydrating procedure, determination of the transparentizing procedure, determination of the dewaxing procedure, the dyeing method and the mounting method are improved. The method is also suitable for other blades with different thicknesses and properties. By adopting the method, slice manufacturing of blade paraffin with different thicknesses and properties can be realized practically, and a uniform and practical manufacturing method for theoretical manufacturing of paraffin is popularized.