In this paper, we focus on a new wood-based panel unit, which was named Micron Wood Flake for its large size in length, a very small size in thickness, and especially its wooden color in appearance. The flakes were obtained by mechanical processing on waste wood based on the micro-processing theory and technique. In order to design the device and determine the key processing parameters, a simulation of micron wood flake was proceeded based on a mathematical model of single wood cell proposed here. Comparing with the experiments results, it showed that the model is feasibility to some extent. In contrast to the other methods of disposing waste woods, the method proposed here is no environment pollution absolutely, consequently, as an application of this kind flakes, a new environment-friendly decorative board was developed, and the physical and mechanical properties of the samples reaches Japanese light particleboard standard JISA5908.