The utility model provides an insulation test auxiliary tool and an insulation test device. The utility model relates to the technical field of electrical equipment insulation tests. The clamping device comprises a clamping main body, a clamping part and a winding body, the clamping part is arranged in the accommodating area in the clamping main body; the clamping part is connected with the clamping main body through a connecting piece; a clamping area is arranged between one end of the clamping part and the clamping main body; one end of the winding body is connected with the end, away from the clamping area, of the clamping body. The other end of the winding body penetrates through the clamping area; the winding body is wound on the outer surface of the to-be-measured body; the winding body is electrically connected with a shielding wire of the insulation testing device; an elastic piece is arranged between the clamping part and the clamping main body; the winding body is clamped inthe clamping area, the technical problems that in an insulation test, connection between the shielding wire and the to-be-measured body is complex, attachment between the shielding wire and the to-be-measured body is poor, and measurement precision is affected are solved, and the technical effects that connection between the shielding wire and the to-be-measured body is convenient and fast, and attachment between the shielding wire and the to-be-measured body is good are achieved.