The radio wave transmitting decorative member and the method of producing thereof efficiently and stably of the present invention is provided with radio wave transmitting properties as well as mirror-surface like metallic luster, hardly loses its metallic luster, and can be produced at a low cost. The method of producing a radio wave transmitting decorative member, having a substrate, a transparent organic material layer, and a light reflecting layer formed of an alloy composed of either silicon or germanium and a metal provided between the substrate and the transparent organic material layer; wherein the light reflecting layer is formed from a target having an alloy composed of either silicon or germanium, and of a metal with the use of a DC magnetrons sputtering.