Ceramic bearing has high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation, no oil self-lubrication, high speed and other characteristics. Can be used in extremely harsh environment and the special operating mode, can be widely used in aviation, spaceflight, navigation, petroleum, chemical industry, automobile, electronics, metallurgy, electric power, textile, pumps, medical equipment, scientific research and national defense military and other fields, is the new materials of high-tech products.