This research explores the heritage value of calligraphy art in modern society through the lens of big data analysis. Historically, calligraphy has been interpreted primarily as a traditional cultural skill or an artistic aesthetic form, often neglecting its deeper cultural significance and multiple functions. This study aims to uncover these overlooked dimensions by examining calligraphy from historical, cultural, and societal perspectives. Using big data analytics, we analyze how modern information technology facilitates the dissemination and exchange of calligraphy. We also explore the role of calligraphy in promoting Chinese cultural identity and international cultural exchange. Our findings suggest that calligraphy, as a dynamic cultural carrier, not only preserves traditional skills and aesthetics, but also adapts to contemporary digital platforms, thereby enhancing its educational, social, and cultural value in today's globalized world.