The invention relates to a variable color thermoprinting membrane and a making method thereof. The variable color thermoprinting membrane includes a base membrane, a release layer, a transflective
metal layer, an information medium layer, a total reflecting
metal layer and a
hot melt adhesive layer, the information medium layer is a yieldable organic medium
coating, steps with different heights are arranged on the at least one surface of the information medium layer or in the information medium layer, and the height of each of the steps corresponds to the Fabri-Perot cavity of a color. The above Fabri-Perot cavities enable a plurality of variable color zones, variable color figures and characters to be formed on a same
hot stamping membrane, can realize the change of the
color effect with the viewing angle under different polarization, and the color of the novel thermoprinting membrane changes. The thermoprinting membrane is made in a roll-to-roll manner, a heat
evaporation coating partially substitutes a vacuum sputter
coating, the organic medium coating is made in an efficient nano-coating manner, and steps and a micro-nano structure are obtained through an impression means, and the method is simple and efficient, and is suitable for wide format production.