Abstract: With the development of new technology and industry revolution, digital economy has become the new engine for global economy growth. Major countries attach great importance to the development of digital economy. In the era of the digital economy, the European Union, which has traditionally pursued the supremacy of human rights, is increasingly emphasizing digital sovereignty and has carried out many actions to safeguard digital sovereignty, which deserves attention and indepth study. From the perspective of information study, this article comprehensively uses modeling method, difference method, literature analysis and observation method to systematically sort out important materials related to digital sovereignty issued by the European Union and its major member states, such as strategic documents, leader speeches, policies and regulations, and evaluation reports. This article summarizes the concept of digital sovereignty proposed by the European Union, and illustrates how EU safeguard its digital sovereignty from the three dimensions, including digital platform regulation, critical infrastructure construction, and technology & industry advancement, and then explains relevant enlightenments and suggestions.

Key words: European Union, Digital sovereignty, Digital governance, Digital competition, Digital economy