Coaxial test socket for 224Gbps superspeed

A coaxial test socket for a 224Gbps superspeed comprises a test socket body and a test socket cover plate which are made of metal, the test socket body is provided with a mounting hole, a first polymer positioning piece matched with the mounting hole is arranged in the mounting hole, the first polymer positioning piece is provided with a first jack and a second jack, and the first jack and the second jack are matched with each other. Test probes are respectively inserted in the first jack and the second jack, a second polymer positioning piece is fixedly arranged in the test socket cover plate, and a first positioning hole matched with the first polymer positioning piece and a second positioning hole communicated with the first positioning hole and matched with the end part of the test probe are formed in the second polymer positioning piece; and the height of the first polymer positioning piece is smaller than the length of the test probe, so that large dynamic bandwidth and high isolation of the coaxial tes