The invention provides an intelligent substation telecontrol system equipment test method, device and system and relates to the technical field of intelligent substation signal testing. The method comprises the following steps: acquiring a total station system configuration file SCD and a telecontrol information point table which are imported in advance, wherein the telecontrol information point table comprises description information of each MMS signal point of bay-level equipment, signal description values corresponding to the description information respectively and dispatching point addresses corresponding to the description information respectively, and the MMS signal points are signal test points in the bay-level equipment; sequentially acquiring the MMS single points correspondingto the description information respectively from the total station system configuration file SCD according to all the signal description values, and generating and sending MMS detection messages of all the MMS signal points to telecontrol system equipment; receiving a telecontrol signal generated by the telecontrol system equipment according to the MMS detection messages; and according to the telecontrol signal, the MMS detection messages and the dispatching point addresses in the telecontrol information point table, judging whether the telecontrol system equipment is in normal operation or not.