The invention discloses a clamping-ring-type welding-free pressure test plugging device. The device comprises a fixed ring installed at the end of a pipeline and a skid-resistance fastening pressing sheet which is installed between the fixing ring and the outer surface of the pipeline, wherein a plugging blind plate is further installed at the end of the pipeline; a pressure sealing ring is further installed in the plugging blind plate, so that a plane between a bevel face at the end of the pipeline and the pressure sealing ring achieves effective face sealing. The device is easy to operate, and the quality problem of welded plugging is solved; moreover, the problem that the installing construction period is too long is also solved, and the efficiency of a pipeline pressure test is greatlyimproved; moreover, the device can be repeatedly utilized, and the cost for installing and building the pipeline is reduced.