[Purpose/significance] For a long time, the two patterns of cross-border data flow regulation of the Europe? an Union and the United States have occupied the international dominant power; Japan's new cross-border data flow regulation scheme breaks the traditional pattern and has positive reference significance for the formulation of cross-bor? der data flow rules in China. [Method/process] Using the methods of comprehensive analysis and comparison, this pa? per makes a classified review of the relevant research on cross-border data flow at home and abroad, and finds out the breakthrough point. Describe the two major patterns of cross-border data flow regulation in the European Union and the United States and their international impact, and analyze the concept, jurisdiction mechanism, world promotion pro? cess and impact on the European, American and Georgia bureaus of the new scheme of cross-border data flow regula? tion in Japan. Based on the comparison between China and Japan, this paper analyzes the advantages of the new scheme of cross-border data flow regulation in Japan and its applicability to China. Then it puts forward the idea of Chi? na's cross-border data flow regulation path oriented by "ensuring data security".[Result/conclusion] The conclusion is that we should explore the path of China's cross-border data flow regulation from four aspects: adhering to and imple? menting the basic principle and orientation of "ensuring data security and free data flow"; Implement data classification and hierarchical management, and implement safe cross-border data flow control strategies; Take technical measures to ensure the safety of cross-border data flow; Strengthen international negotiation and cooperation, and strive for the voice and dominance of cross-border data flow regulation.