The field of fashion design relies on the originality of fashion designers and information on design trends, and design education also focuses on the creative ideas of designers; in this field, design through co-design is a very limited area. However, with the proliferation of participatory culture, the need to diversify fashion design education methods has also emerged. The purpose of this study is to present an educational framework and an instructional strategy for co-design based on the changing role of the designer and to obtain educational insight through the implementation of an actual education prototype. To do this, we developed an educational prototype and implemented it with six undergraduate students. Through this study, the participants engaged in the process of design development with the consumer and analysed the instructional insight. As a result, this study redefines the roles and design methods of designers for co-design and identifies creativity characteristics through the co-design process. The results of this study can be used as basic data for co-design education and can contribute to the expansion of fashion design educational methods.