The purpose of this study is to design a framework using service design that combines products and services in workshops that use the designed framework. For research methods and contents, first, a theoretical review of the convergence of products and services, service design, and joint creativity is conducted through prior research. Second, we design a framework for product and service convergence co-creativity research using the double diamond model, a representative of service design, which is an integrated development method. Third, in order to utilize the designed framework, a convergence team including planning, product, and service designers is formed and a workshop is conducted to develop the product and service convergence design. As a result of the study, it can be confirmed that the product and service convergence joint creativity workshop using the service design framework is effective for developing new products. As the need for product and service convergence increases, the service design-based co-creativity framework presented in this study is significant in that it presents a leading example of convergence product development.