The utility model provides a multi -functional mutual -inductor secondary experiment termination, relates to power equipment technical field, comprises stage body, mutual -inductor controller, mutual -inductor load box and mutual -inductor effect appearance, is equipped with the platen on the stage body, is equipped with the spliced pole on the platen, is equipped with the mutual -inductor controller in the stage body, is connected with mutual -inductor load box and mutual -inductor effect appearance on the mutual -inductor controller respectively, is equipped with the secondary connecting wire on the stage body face, and be equipped with the plug -in on the secondary connecting wire and connect, the plug -in joint comprises control head, insulating cover, plug and wire, is equipped with the plug in the control head, is equipped with the spring between control head and the plug, is connected with insulating cover on the spring, and the one end of plug is connected with the wire, the utility model discloses simple structure, simple operation, can be portably quick wiring has avoided the test wire to touch each other to guarantee the accuracy and the security of test, improved work efficiency.