The invention discloses a method and system for monitoring standard meter anomalies in a standard electric energy meter group, and belongs to the field of electric energy measurement. The method comprises the steps that a to-be-tested meter is connected to the standard electric energy meter group, and error values of all standard meters in the standard electric energy meter group and to-be-testedmeter are obtained to generate an error value set; the error values are output; subset sequences are constructed according to chronological order; a set pair is generated according to the subset sequences of any two standard meters; rank set pairs are generated according to the set pairs; same, different and inverse analysis is performed on the generated rank set pairs to obtain relative degrees;the two electric energy standard meters with the smallest relative degree are judged, when the relative degree exceeds a preset range, the relative degrees between the multiple standard meters in thestandard electric energy meter group and the two standard meters with the smallest relative degree are obtained, and the standard meters with the smaller relative degree is determined as an abnormal standard meter and an alarm is given. The method and system for monitoring the standard meter anomalies in the standard electric energy meter group have the advantages that the universality is good, the operation is flexible, and the stability and robustness of the standard electric energy meter group are improved under the premise of ensuring the fairness of measurement.