The principle of informed consent and purpose limitation are becoming increasingly ineffective in practice，which hinders the rational use and free flow of data. China may introduce contextual integrity so as to promote appropriate flow of personal information in corresponding contexts. Context can be interpreted as “social domain”. Information flow should follow informational norms in different contexts. The appropriateness of information flow can be preliminarily determined by analyzing the key parameters of informational norms such as contextual actor，type of information and transmission principle. In the link of normative analysis，if the new information flow mode promotes the fundamental values of society，as well as the goals and values of the particular context，the information norms should be revised and the rationality of the new mode need to be recognized. In legislation，different fields or industries are used as the criteria of context differentiation to promote decentralized legislation and draw up multi-level normative texts. In case analysis，factors in context should be considered comprehensively，so as to analyze the risk of information processing.