Processing technologies of superfine wood powder is a new field for wood the industry, while a new research direction is added for the wood industry. Grinding equipments for superfine wood powder is one key device for superfine wood powder production, and it plays an important role during processing superfine wood powder. Cutting and grinding methods with both semi-enclosed and two-cycle characteristics are used, there are three kinds of screen with various specifications inside the grinding room, and three kind of wood powder with different granularity requirements. Virtual reality technology is introduced into the wood powder pulverizer with multi-granularity designed, and both three-dimensional model of wood powder pulverizer with multi-granularity and the visual system for enhanced wood pulverizer are built. Virtual design technology can not only reduce product development cost greatly for the wood powder pulverizer but also shorten product development cycle for the wood powder pulverizer greatly, and there has vital significance to save manufacture cost.