The invention relates to the field of machine manufacturing, and particularly relates to equipment for cleaning a ring gauge. The equipment comprises a feeding device, a transportation device, a soaking tank, an ultrasonic cleaner, a drying device and a discharging device, wherein the transportation device consists of a first motor, a turnplate and five transportation assemblies, the five transportation assemblies are circumferentially distributed on the turnplate, each transportation assembly consists of a second motor, a turning wheel, a steel rope, a mounting frame, a connecting block and alimiting track, lugs which are in sliding fit with the limiting track are arranged on two ends of the connecting block, a plurality of limiting edges are arranged inside the mounting frame, a limiting strip is arranged on one side of the mounting frame, and a through hole for the steel rope to penetrate is formed in the turnplate. A ring gauge frame for storing ring gauges is pushed into the mounting frame under the pushing action of a first cylinder, the ring gauges in the mounting frame can be driven by the transportation device, to sequentially pass through the soaking tank, the ultrasoniccleaner and the drying tank so as to complete the soaking, cleaning and drying of the ring gauges, discharging can be completed through the discharging assembly, so that the cleaning automation of the ring gauges can be realized.