Abstract: Digital technology, characterized by its high penetration and wide coverage, exerts a disruptive influence on the operation of the entire social system. While social innovation exhibits a comprehensive trend of transformation, it also brings about governance challenges, necessitating the construction of a systematic analytical framework to elucidate the interactive evolution mechanisms and impact pathways between digital technology and social innovation. This is essential for better promoting the digital transformation of social innovation. This paper, grounded in the social-technical paradigm, constructs a theoretical framework for social innovation in the context of digitalization from the perspective of the integrated development of digital technology and social systems,, elucidating the evolutionary path of social innovation digitization, which can provide references for future related research. This paper finds that: (1) The high penetrability of digital technologies triggers comprehensive changes in social innovation. The widespread societal applications of digital technology inventions drive the transformation of social interaction modes, reshape the operation modes of public services to promote the realization of social system functions, and stimulate changes in social decision-making modes and institutional environments. Social innovation in the digital context is mainly reflected in three aspects: innovation in social organizational forms, innovation in social service models, and innovation in social decision-making mechanisms. (2) Based on the perspective of interaction among social system entities, social organizational forms in the digital context continuously transform towards platformization, sharing, and onlineization. Digital platforms accelerate information exchange, aggregation, and transmission, promoting efficient collaborative cooperation among entities; sharing improves the efficiency of asset utilization, promoting the circulation of social elements; onlineization accelerates the resourceization of big data, promoting social information sharing, resource collaboration, and management. (3) Based on the perspective of realizing social system functions, digital technology innovates social service supply models, promoting the equalization, experientialization, universalization, precision, personalization, intelligence, efficiency, and greening of public services such as education, healthcare, elderly care, and transportation. (4) Based on the perspective of social system institutional construction, digital technology drives social governance transformation, reconstructs social decision-making mechanisms, promotes the connectivity of government decision-making systems, the scientificization of government decision-making methods, and the democratization of public decision-making systems. (5) Under the digital backdrop, governance of social innovation necessitates the establishment of a digital ecosystem supporting the application of social innovation scenarios, enhancing the capacity for social governance within the digital technology context, and constructing a digital social governance mechanism that coordinates security and development. The contribution of this paper mainly lies in the following aspects. First, by introducing the social-technical paradigm to analyze the transformation mechanism of social innovation in the digital context, the article systematically elaborates the collaborative evolutionary paths of digital technology and social systems at micro, meso, and macro levels, constructs a theoretical framework for social innovation in the digital context, and fills the gap in existing research focusing on specific areas lacking an overall perspective. Second, it profoundly reveals the inherent impact mechanism and path of digitalization on social innovation transformation, proposing that the key to social innovation digitization lies in the transformation of social organizational forms, social service models, and social decision-making mechanisms, thereby expanding the research ideas of existing social innovation. Third, in response to the current situation of social innovation application and governance practices in the digital context, it provides policymakers with strategies for digital transformation, which is of great practical value.