The utility model relates to a fault analog device for a secondary circuit in a practical training of relaying protection in power industry, belonging to vocational training facilities technical field. The device comprises a programmable controller and further at least comprises an analog loop of short circuit and broken faults, an analog loop of declined insulation and direct current grounding, and an analog loop of reversed polarity and negative phase sequence alternating circuit; the analog loops are connected with extending relay contacts, and the control output ends of the programmable relay are respectively connected with each extending relay. Only properly adjusting and controlling the programmable controller, a plurality of analogs of the faults in the secondary circuit, including short circuit, broken circuit, declined insulation, direct current grounding, reversed polarity, and negative phase sequence etc., can be realized conveniently and flexibly with the help of the movement of each expanding relay, thereby providing great convenience for the training of relaying protection workers.