With the growth of Data Science, digital transformation has become an essential path to sustainable development in the manufacturing industry. In order to help the government make a more effective and accurate assessment of the current state of digital transformation in the manufacturing sector, we construct a measurement system for corporate digital transformation by integrating internal and external perspectives. The internal organization’s focus is measured through annual reports, MD&A texts, customer and supplier state, and intangible assets, while the external environment’s focus is measured through analyst reports, news reports, and investor Q&A texts. We conduct an empirical analysis of 175 listed manufacturing companies in the Beijing-Tianjin-Hebei region, with results indicating: (1) The digital transformation measurement method that integrates internal and external concerns can compensate for the insufficiency of a single perspective on digital measurement, effectively capturing the interaction between internal organizations and the external environment to achieve a comprehensive assessment of digitalization. (2) The region’s overall level of digital transformation is relatively good, suggesting that digital transformation has shifted from an externally environmental-driven model to an internally organizational-driven one.