International Comparative Study of Data Sovereignty Governance Models by National Academy of Innovation Strategy, based on studies of the European Union, the United States and India among global major economies, analyzes Chinese and international data sovereignty governance models and evolving trends, examines implications for promoting China’s cross-border data flows, explores how to further improve data sovereignty governance strategies, provides Chinese wisdom and solutions for global data sovereignty governance, and proposes targeted countermeasures and suggestions to address challenges and safeguard data sovereignty, which has significant practical implications.