Abstract: Digital economy integrates with real economy to foster new productive forces. Existing studies use coordination models, input-output models, and single indicators to measure China's digital-physical integration depth, lacking comprehensive representation. This paper constructs an evaluation index system from two dimensions: digital economy materialization and real economy digitization. It uses "entropy-TOPSIS" method to measure China's overall and provincial digital-physical integration depth from 2012 to 2023. Robustness tests are conducted using "projection tracing-simulated annealing" and other methods. Regional differences and trends are characterized using Dagum Gini coefficient and Kernel density estimation. Findings show: China's digital-physical integration deepens, especially post-2017. The digitization of the real economy aligns with overall integration, while digital economy materialization surges post-2019. Regional disparities in integration depth narrow over time, with inter-regional differences as the main source. Spatial autocorrelation exists in provincial integration development, with a higher probability of upward transfer. Low-level provinces are more influenced by neighbors for upward "leap".These conclusions provide data and policy insights for accelerating China's digital-physical integration and developing new productive forces.

Key words: integration of data and reality, techno-economic paradigm, materialization of digital economy, digitization of real economy