This paper delves into the context, content, and audience interaction of design-related short videos on Bilibili, examining their impact on design discourse. The study reveals that these short videos merge professional and popular design discourses, making design more accessible to the general public through unique narrative and visual methods. These videos not only provide design knowledge and technical demonstrations but also reflect a critique of fast-paced living and modern consumer culture. Through interactive features such as bullet comments and reviews, a diverse and interactive design discourse space has formed, where the boundaries between designers and viewers are increasingly blurred, facilitating the widespread dissemination of design concepts and innovative methods. Additionally, the platform's algorithms significantly influence the recommendation of video content, further shaping the paths of design discourse dissemination and audience reach. In summary, as a new media tool for design communication, design-related short videos not only broaden the audience for design but also promote the diverse development of design culture.