The article explores the necessity and feasibility of constructing social memory from the background of the construction of social memory, the progress of research and practice, the theoretical value and the practical significance. It studies the rise and development of digital humanity from the perspective of digital humanity, concept and characteristics. The situation analyzes the logical connection between digital humanities and social memory. This article believes that the construction of social memory plays an important role in inheriting human civilization and promoting social progress. As a product of deep integration of digital information technology and humanities and social sciences, digital humanities has obvious advantages in the development and utilization of information resources, which brings much beneficial enlightenments to the construction of social memory. Therefore, based on the digital humanistic perspective, the article proposes an optimization strategy for social memory construction, namely, constructing a multi-party collaborative linkage cross- border cooperation mechanism, an efficient shared information resource integration mechanism, a fast-responding information technology support system, and a high-quality and efficient social memory service system.