Strengthening government policy guidance and boosting digital industry innovation to grasp the digital economy development initiative is an important path to realize the strategy of digital power. This paper takes the establishment of the National Big Data Comprehensive Pilot Zone as an entry point, and reveals the impact of the digitalization policy of the Big Data Pilot Zone on the innovation of digital industry from the perspective of digital ecology. The study found that Big Data Pilot Zone have stimulated digital industry innovation, reflecting the fundamental role of digitization policies in promoting the construction of digital China for the upgrading of digital industries. The Big Data Pilot Zone has significantly improved the digital ecology and stimulated digital industry innovation by accelerating the convergence of digital knowledge, strengthening digital governance and promoting public digital attention. Big Data Pilot Zone to enhance digital industry innovation are more prominent in regions with strong market segmentation, strong intellectual property protection and good credit environments. Further, Big Data Pilot Zone are equally effective in stimulating innovation in the four core subsectors of the digital industry, but there are differences in the intensity of the push. This paper reveals the driving mechanism of policy-enabled rapid development of digital industry from the perspective of digital ecology, which is instructive for enhancing the competitiveness of digital industry.