Abstract: Digitization and green transition represent two pivotal trends in the contemporary global economic and social transformation. Leveraging digital technology to enhance quality and efficiency for export promotion, and empowering industrial ecologization through digital technology to foster green development and thereby drive exports, hold significant theoretical and practical implications for achieving stability and quality in export trade. Building upon an analysis of the underlying impact mechanism, this paper employs panel data from 30 Chinese provinces spanning 2012 to 2022 to empirically investigate the influence of digital technology development on export trade, as well as the mediating role of industrial ecologization. The findings reveal that digital technology development exerts a significantly positive effect on export trade, yet an inherent tension exists with the quantity of employment. The impact of digital technology development on export trade demonstrates regional and product heterogeneity: it is most pronounced in the western region, exhibits a lower marginal effect in the eastern region, and is statistically insignificant in the central region. Furthermore, it has a significant impact on the export of industrial manufactured products, a modest effect on primary products, and no discernible impact on high-tech products. The study also finds that digital technology development can positively influence exports by empowering industrial ecologization, presenting an effective pathway for export promotion. However, the capacity of digital technology development to foster industrial ecologization is not yet sufficiently robust. The research outcomes offer valuable insights for accelerating and optimizing digital infrastructure construction, guiding the digital transformation of traditional industries, and harnessing digital technology to empower industrial ecologization, thereby promoting the sustainable development of import and export trade and green development.