The invention discloses a ceramic internal polishing clamping device and method, belonging to the technical field of ceramic polishing clamping, comprising a bottom box, a dust accumulation tank is provided in the bottom box, an ash suction component is fixed in the dust accumulation tank, and the bottom box Fix the platen above the inner ash accumulation tank, install the clamping device above the fixed platen, set the polishing assembly above the clamping device, and fix the polishing assembly on the support frame plate installed at the side end of the bottom box. The ceramic internal polishing clamping device and method of the present invention can improve the clamping efficiency, facilitate the fixing of polished parts of different lengths, facilitate manipulation, improve the convenience of use, increase the stability of the clamping groove, prevent the slipping of the polished parts, and improve the The stability of polishing is suitable for polishing a variety of polishing parts, increasing the overall adaptability, increasing the polishing area, avoiding manual polishing, preventing dust from rising, affecting the staff, improving the quality of the working environment, and reducing damage to the human body.