Research on the Coordinated Development of Urban Digital Economy Based on the “Entropy Weight-Coupling Coordination Model” —— Taking Beijing-Tianjin-Hebei as an Example

Against the background of the national “14th Five-Year Plan” to promote the construction of Digital China, this study analyzes the synergy of digital economic development in the Beijing-Tianjin-Hebei region from 2019 to 2023 based on the entropy method and coupling coordination model. The results show that Beijing’s digital economy comprehensive score and coupling coordination degree are significantly higher than those of Tianjin and Hebei, reflecting its core advantages in technological innovation and resource agglomeration. The study found that the coordination capacity of the digital economy in Beijing-Tianjin-Hebei has been decreasing year by year, which may be related to factors such as the widening regional gap caused by Beijing’s “siphon effect”, the weak digital infrastructure in Tianjin and Hebei, and the insufficient capacity of industrial acceptance. In order to improve the regional coordination efficiency, it is necessary to strengthen the technology spillover and resource sharing mechanism between Beijing and Tianjin and Hebei, focus on improving the layout of digital infrastructure in Tianjin and Hebei, optimize the adaptability of industrial acceptance policies, and pay attention to the driving role of differentiated factors such as science and technology investment and government governance on regional coordination. The research conclusion provides a recent dynamic reference for the coordinated governance of the digital economy in Beijing-Tianjin-Hebei, and the trend drivers can be further analyzed in combination with policy practice in the future.