Pneumatic Kelvin test fixture

A pneumatic Kelvin test clamp comprises an operation table, and the operation table is composed of a support, a fixing plate, a positioning plate, a spring probe, an air cylinder, a tester trigger switch and a Kelvin tester connected to the Kelvin tester through a wire. The spring probe is fixed by the cylinder telescopic arm, the spring probe is lifted and descended through the cylinder telescopic arm, the spring probe contacts and disconnects a tested device, Kelvin connection and disconnection are realized, and meanwhile, a test instrument is triggered to realize measurement; the positioning plate is installed on the operation table and used for fixing a to-be-tested device. The fixing plate of the spring probes is fixed with the telescopic arm of the air cylinder, the spring probes are arranged on the fixing plate of the spring probes, and the distance between the spring probes can be adjusted, so that the spring probes can be correctly pressed on the contact of the tested device; a to-be-tested device is