In view of the current situation that digital technology in the field of archives and documentary heritage is slightly insufficient in the application of knowledge services, an activation scheme is designed based on the association between knowledge organization and service to promote social sharing. Based on ontology and knowledge graph construction, this paper a data-driven value mining and activation scheme of archival documentary heritage. From data extraction, knowledge organization, knowledge discovery to value expression, the method and process of applying digital technology to archival literature heritage are studied. Through the case demonstration scheme of Dasheng archives, a feasible activation path is proposed for knowledge service. The resules indicate that based on the multi-disciplinary perspective, this paper explores the four meanings of archival documentary heritage from the perspective of historical and socio-cultural value: preserving history, safeguarding memory, evoking emotions, and shaping identity. From the four aspects of knowledge platform service, multi-sensory interaction, immersive experience, and media sharing, this paper proposes the construction of archival culture living space, and shows the drive and influence of digital technology on the activation and utilization of archival documentary heritage.