Recording-level data management method and system based on data dynamic desensitization

The invention relates to a data dynamic desensitization-based record-level data management method and system. The method comprises the following steps of S1, constructing a knowledge graph of power data; s2, dividing nodes and data into public opening and authorized opening level configuration; s3, authority control information is introduced, and authority configuration is carried out according to departments and roles; s4, filtering query results of the user in combination with permission configuration information in query and filtering functions of the knowledge graph to ensure that the user can only see entities and relationships with permissions; and S5, the user checks the authorization open-level data, double permission verification needs to be carried out, whether a node access permission exists or not is verified firstly, if the node access permission exists, corresponding encrypted data are obtained, whether a data access permission exists or not is verified, and if the data access permission exists,