The invention provides a method of remotely calibrating an intelligent substation digital electric energy metering device. The method comprises steps: a remote calibration device receives a remote calibration order through an electric energy remote terminal; a clock synchronization device carries out clock synchronization on the connected merging unit, the remote calibration device and a to-be-measured digital electric energy metering device through an in-substation clock synchronization network; the remote calibration device and the to-be-measured digital electric energy metering device simultaneously start a standard electric energy metering function according to the time indicated by signals sent by the clock synchronization device and stop metering according to the preset ending time; an electric energy standard value metered by the remote calibration device and an electric energy testing value metered by the to-be-measured digital electric energy metering device are used for calculating an electric energy metering error for the to-be-measured digital electric energy metering device according to an error calculation formula; and the remote calibration device returns the electric energy metering error of the to-be-measured digital electric energy metering device to a metering master station via the electric energy remote terminal to complete remote calibration.