In today's era of the pursuit of personalization, the range of product is greatly enriched. Thus, enhancing the level of product innovation and design capabilities is the inevitable requirements of the new era. Based on the bifurcation theory, people’s thinking state in the innovative design process of a product was analyzed. Some innovative design methods that commonly used in modern design theory were introduced.Based on a product design example, two innovative design methods were respectively carried out to realize the design of new products.