The invention discloses a high-voltage test auxiliary wiring device, comprising a fixing end (1), a splicing fitting fixing end (7), a lower end splicing fitting (10) and a grounding end (14). The fixing end (1) is installed at one end of a junction pole main body (2). The junction pole main body (2) is internally provided with a telescoping rod (4). The telescoping rod (4) is provided with a wire clamp fixing position (3). Compared with the prior art, the high-voltage test auxiliary wiring device has the beneficial effects of scientific and reasonable structure and safe and convenient operation. Compared with the traditional technology, the technical scheme of the invention is characterized in that the operator does not need to climb high for operation and can finish the wiring operation just on the ground, the dangerous factors of the high-place operation are avoided, and the safety of the experimental work is improved; the operator does not need to climb a ladder up and down before and after testing to ensure an enough safe distance, and does not need to move and fix the ladder in phase commutation measurement; the testing cost is reduced; and the operation is simple, the movement is convenient, and the testing time is greatly reduced.