The work aims to briefly describe the origin and development status of behavior design theory, analyze the significance of creating high-value user experience by designing user behavior, and propose an application strategy based on the behavioral design theory in product design activities, to explore the ways to improve user experience in product selection and use through behavioral design in the era of experience-oriented consumption.The way of theory integration and application case comprehensive analysis was adopted to study the application trend of theory development. By summarizing the user experience level and the user behavior type, combining with the case analysis and Fogg behavior model analysis, the behavior design strategy that could be deeply applied in the product design was explored. Faced with the acceleration of consumption upgrading and market diversification, the focus of product design has shifted to"user experience first". Behavior, as the touch point of experience, can increase the goodwill of users in the whole process of contact with the product through design. The design practice based on behavioral design can effectively and greatly improve the user experience, form the memory scream point in the process of product use, and achieve a win-win situation between the brand and the user.