The 3-D point data of the clypeus surface of the dung beetle (Copris ochus Motschulsky) were simplified, and a 3-section wedge model was used for analyzing the applied force of the half clypeus surface in several directions. It was found that the advantageous mode of the clypeus in soil cut is the sliding cutting as a result of the optimized geometrical configuration of the clypeus of the dung beetle, through evolution over millions of years, which plays an important role in cutting resistance reduction of the clypeus. The potential applications of the clypeus in bionic cutting resistance reduction were analyzed.