The invention provides a correlation method of records in a power grid control information management system. The method is used for managing the records in the power grid control information management system. Each record has a globally unique identifier and an event identification field, and the globally unique identifiers in the records are different. The method includes the following steps that firstly, all the records are sequenced according to the event identification fields, and then the records with the same event identification fields are continuously ranked; secondly, the records with the same event identification fields are secondarily sequenced; thirdly, all the event identification fields are sequenced; fourthly, the records with the same event identification fields are used as correlation units, and all the correlation units are ranked according to the sequencing result of the event identification fields. According to the method, the display mode of log information of an existing power grid control information management system can be improved, and the problem of discrete display of the records, belonging to the same events, in the power grid control information management system is solved.