Aviation plug testing device

The invention provides an aviation plug testing device comprising an operation box, a ground wire and at least one first type test line. The operation box includes a box body and a panel arranged at one side of the box body. A connecting seat is arranged on one side wall of the box body. A grounding jack, a pair of insulating meter jacks, a pair of multimeter jacks, a grounding switch and a plurality of test switches are arranged on the panel. A first contact of each test switch is connected with one corresponding core of the connecting seat; a first contact of the ground switch is connected to the ground jack; second contacts of each test switch and the ground switch are respectively connected with a positive jack of the pair of insulating meter jacks and a positive jack of the pair of multimeter jacks; and third contacts of each test switch and the ground switch are respectively connected with a negative jack of the pair of insulating meter jacks and a negative jack of the pair of multimeter jacks. Compared