Abstract: Through its digital sovereignty strategy and the construction of a digital fortress, the European Union (EU) has successfully shaped the global model of digital governance, driving the formation of the “Brussels effect”. Existing scholarly explanations for how EU digital governance rules shape the global digital governance model follow two analytical paths: the marketbased approach and the regulationbased one. Both perspectives share a common logic of embedding the phenomenon of digital governance within traditional political economy frameworks. However, these theoretical assumptions risk oversimplifying the internal logic of the EUs digital sovereignty strategy and fall short in fully capturing the mechanisms through which its governance model exerts international influence. To more accurately understand how and why the EU plays a central role in shaping the global digital governance model, it is essential to examine “digital sovereignty” and the “Brussels effect” as components of an interlinked institutional process. It can be argued that the capability of the EUs digital governance model in generating the “Brussels effect” not only stems from its solid rulemaking capabilities and the spillover effects of its market size but also from an internally and externally coupled institutional dynamic mechanism. This mechanism embeds its digital standards into the institutional choices of third countries in response to external governance needs, thereby achieving effective alignment between institutional supply and demand, and enhancing the adaptability and legitimacy of its digital regulatory output. 

Key words: digital governance, digital sovereignty, digital fortress, the Brussels effect, EU digital governance model

摘要： 欧盟通过其数字主权战略和数字堡垒建设，成功塑造了全球数字治理模式，推动了“布鲁塞尔效应”的形成。对于欧盟数字治理规则如何塑造全球数字治理模式的问题，当前学界存在市场路径和规制路径两种解释路径，其共同逻辑是将数字治理现象嵌套进传统政治经济理论中进行解释，这种理论预设限制了对欧盟数字主权战略内在逻辑的深入理解，也影响了对其全球数字治理模式影响力的解释精度。若要准确理解欧盟之所以能在全球数字治理模式塑造中发挥重要作用，必须将“数字主权”与“布鲁塞尔效应”作为一个内外联动的制度构建过程加以考察。可以说，欧盟数字治理模式之所以能够产生“布鲁塞尔效应”，不仅得益于其自身稳固的规则制定能力与市场规模的外溢效应，更在于一种内外耦合的制度动力机制，其以回应外部治理需求的方式嵌入他国制度选择过程，从而实现了制度供给与制度需求之间的有效对接，增强了其数字规制输出的适配性与合法性。

关键词: 数字治理, 数字主权, 数字堡垒, 布鲁塞尔效应, 欧盟数字治理模式