Abstract:[Purpose/significance] By analyzing conception and developing background,the paper intends to explore major countries’ data sovereignty polices,and to offer helpful suggestions to our country’s relating researches[Method/process] The paper uses literature review method and content analysis method to analyze relating papers laws and policies,in order to clarify the conception,developing background,representing policies of data sovereignty,put forward recommendations to protect our countries’ data sovereignty[Result/conclusion] Aiming to ensure our countries’ data sovereignty,clearly sovereignty strategy and development path should be established,construct strategic governance system with Chinese characteristics and strengthen multilateral international cooperation are also necessary