Ceramic roller covering is a way of cold vulcanization of roller covering rubber, its main features are: the surface of each ceramic rubber sheet is cast into the durable rubber sheet by casting hundreds of small independent ceramic pieces, each ceramic piece has a raised feature, under the general pressure of the conveyor belt, the thousands of uniquely cast bumps are able to produce positive traction, preventing skidding and prolonging the service life of the conveyor belt roller. At the same time, the elasticity possessed by the underlying rubber provides excellent impact resistance. Each piece of ceramic rubber plate has grooves spaced at a certain distance, which can enable foreign matter on the roller to be discharged along the grooves, so that the roller has a unique self-cleaning function, which is especially suitable for humid working environments.