The development of cross-border e-commerce industry involves the flow of relevant data between entities in different jurisdictions. Based on the latest laws and regulations，the report analyzes the regulatory mechanism for cross-border data in China from the perspective of cross-border e-commerce industry. According to the different enterprise subjects and data types，the cross-border flow compliance paths of data outbound security assessment，personal information protection certification，and signing standard contracts are discussed respectively. From an international perspective，the regulatory differences in global data flows will not disappear for a considerable period of time. For Chinese cross-border e-commerce enterprises. it is necessary to combine compliance resources that match the business and scale investment with regulatory differences in different markets.