各国围绕数据主权相关的数据管理权和控制权展开激烈的角逐，严重阻碍了数字经济的全球化发展和区域合作，保持数据主权的谦抑性能够对数据主权分歧及冲突作出积极回应。文章梳理发现，各国在数据主权上呈现普遍的积极化扩张趋势，部分国家甚至衍生出扩张的激进式形态，突破了数据安全及流动的合理界限。在法理上，数据主权谦抑性对激进式扩张的协调抑制确有必要。在规则建构的合理性上，谦抑性原则要求数据主权防御主义与进攻主义实现动态均衡。我国数据本地化策略是有限理性下的优先选择，但单一的防御主义非网络强国建设的合理路径，因此我国数据主权建构应在遵循兼容性、合作共治及克己性原则的基础上，协调数据自由流动和安全流动间的不同利益诉求，实现重要数据的控制下流动与非重要数据的信任下流动。

Countries are fiercely competing for data management and control rights related to data sovereignty, which has seriously hindered the globalization of the digital economy. The modest construction of data sovereignty has become the key to breaking the situation. Countries have shown a general aggressive expansion of data sovereignty, while some countries have developed a radical form of expansion. Jurisprudentially, data sovereign modesty is indeed necessary for the coordination and suppression of radical expansion. In rule construction, the principle of modesty requires a dynamic balance between defensive and offensive data sovereignty.  The construction of a single defense-oriented non-cyber power is a reasonable path. The construction of my country's data sovereignty should be based on the principles of compatibility, cooperation and self-restraint, and coordinate the different interests between the free flow of data and the safe flow of data. Appeals to realize the controlled flow of important data and the trusted flow of non-important data.