The invention provides a hub jet polishing machine which comprises two parts including a hub polishing transmission device and a jet polishing solution circulating device, wherein the transmission device is composed of a stand, a drive motor, a belt wheel I, a transmission belt, a belt wheel II, a center shaft, sun gears, elastic retaining rings, planetary shafts, planetary gears, turntables, clamping discs and the like; the jet polishing solution circulating device is composed of a polishing solution tank, a stirrer, a booster pump, a polishing solution pipeline, nozzles and pin shafts. According to the hub jet polishing machine, during working, the drive motor drives the center shaft and the turntables to rotate, the planetary shafts and the planetary gears carry out revolution around the corresponding sun gears, meanwhile, the planetary gears carry out rotation around the corresponding planetary shafts, the clamping discs which are fixedly connected with the corresponding planetary shafts drive a hub to realize revolution and rotation, and a circulating pump jets a polishing solution to the surface of the hub through the nozzles after pressurizing the polishing solution so as to realize surface polishing; and jet polishing is beneficial to health of workers without production of dusts and generating dust explosion accidents.