Abstract: For the design of composite microstructure, the authors noticed that nature has given a very good example in the preparation of high-performance composites using two-phase or multi-phase ordinary materials. The course of mechanical design in composite materials is offered in order to enhance students understanding of bionic design. Therefore, this paper proposes a design platform of spiral micro structure for automatic prepreg placement, which enables students to achieve accurate control of prepreg placement angle in class, and provides feasible experimental conditions for optimizing the mechanical properties of laminates by imitating the spiral micro structure in biological tissues.