The invention discloses a polishing device for processing a jade ware. The polishing device comprises a polishing sheet and a working platform, support legs are welded on for corners of the bottom part of the working platform, placement plates are welded among the four support legs, a first motor is arranged at the top part of the placement plate, the polishing sheet is arranged in the inner partof the working platform, a rotating shaft is welded on the middle position of one side of the polishing sheet, and the rotating shaft is in drive connection with the first motor through a belt. A plurality of rotating discs are arranged on one side of the polishing sheet at equal angles in the polishing device, a plurality of gears are further arranged on one side of the polishing sheet at equal angles, a clamping block is arranged on the rotating disc, the gear is driven by a second motor to rotate, then the rotating disc is driven to rotate, the clamping block is driven to rotate, the jade ware is cut through the clamping block due to the arrangement, the polishing sheet polishes the jade ware, the practicality is increased, and the flexibility is higher.