The utility model provides a secondary wiring device of an automatic detection wire of a mutual inductor, belonging to the technical field of mutual inductor detection, particularly relating to the secondary wiring device of the mutual inductor and aiming at solving the problem of automatic secondary wiring of mutual inductors with uniform shapes and specifications. The secondary wiring device of the automatic detection wire of the mutual inductor comprises a fixed frame and a movable wiring rack, wherein the movable wiring rack is pushed by cylinder pistons so that the end parts of wiring conductors contact with wiring terminals of detected mutual inductors, and the movable wiring rack is reset through compression springs. The utility model is suitable for metering the batched verification of the mutual inductors in a verification center.