It aims to set up the requirement analysis model, apply the requirement analysis method to get the user's potential demand, and prepare the theoretical basis for the product design. Through the process of screening, induction and evolution, and final demand, the potential needs are determined to guide the product innovation design.Application of this set of theoretical system can accurately obtain the potential demand of the product, assist the product design. Based on the requirement analysis, the product design model can effectively obtain the potential needs of the user, the user needs to be transformed into the source of innovation, to enhance the performance of the product, thereby enhancing market competitiveness in order to meet market demand.