Product interaction design is the new development direction of industrial design, and to summarize its current research situation is beneficial for further improvement of the theory and design practices of product interaction design. The relationship between interaction design, user research, humancomputer interface and user interface was analyzed in this paper, current theory study on product interaction design was summarized and comparatively studied from the levels of systemic model, structural model and process model, and traditional interaction design methods and the aesthetic interaction design methods were introduced, compared and discussed. Based on that, this paper discussed the development tendency of product interaction design: the conversion of the study perspective from usability to aesthetic interaction, the establishment of multidiscipline based research framework and research scope, and the development direction of design methods, which referred to the further development of empathy design, the improvement of scenario analysis, and the importing of time dimension.