The invention discloses an electronic voltage transformer anomaly identification method based on in-station joint measurement. On the premise of not adding any device, the anomaly state of the electronic voltage transformer can be accurately identified, a method support is provided for long-term error stability and reliability evaluation on a digital metering system in a complicated operation environment, and finally, development of the new-generation intelligent substation and the technical progress and popularization and application of the digital metering system are promoted.