In the process of economic globalization and urbanization, China's countryside has shown a trend of decline, which has led to rural areas facing tremendous pressure in economic development and cultural inheritance and has become a focus of social concern. However, in recent years, with the gradual recognition of local culture, traditional Chinese regional food culture has been attracting more and more attention and admiration from young people, and it has become an opportunity for rural development through the dissemination and experience of traditional regional food culture. To transform traditional countryside food into a usable value resource and help countryside economic development, this study selected the countryside in the northern region of Fujian, China, as the research object and explored the methods of countryside food design and innovation, especially the method of collaborative innovation applied to the countryside food design process. Through stakeholder analysis, designers organize collaborative design workshops, inviting sellers, artisans of traditional food production, local government, and regional and foreign food consumers to participate in the design and development process and transform traditional food culture and food into consumer-approved food products. The process and framework of rural traditional food design innovation are constructed, and the model can be directly applied to other cases of rural design innovation.