The invention discloses a testing method and device for virtual circuits of secondary devices. The method includes the steps: acquiring total station configuration files of an intelligent substation; acquiring a plurality of secondary devices to be tested in the intelligent substation and communication relationships from the configuration files; testing a plurality of virtual circuits of a plurality of secondary devices in software according to the communication relationships. The communication relationships are used for describing information transmitting relationships of a plurality of secondary devices through a plurality of virtual circuits. The testing method solves the technical problems that testing efficiency of virtual circuits in intelligent substations is low in related technology.