To better understand the internal logic of design knowledge and the development context and trend of service platforms, it is essential to sort out and review the literature on related topics. Based on the Web of Science database, this paper selects the literature related to design knowledge and service platforms from 2000 to 2021 as the research sample and combines CiteSpace and VOSviewer knowledge graph software to conduct a visual analysis of the literature data. The results show that: (1) The research on design knowledge service platforms (DKSP) started late, but with the development of science and technology in recent years, the attention of all academic community to DKSP gradually increases; (2) The DKSP belongs to an interdisciplinary research, involving computer, economy, management, education, art, and other fields; (3) The development of DKSP is closely related to information technology. The application of new technology and the demand for popularization make it gradually embark on the road of social media and commercialization. (4) An interactive knowledge platform network is the future of DKSP, with the goal of multi-participant co-creation, platform knowledge sharing, and multi-value symbiosis.