The utility model relates to a wearing-resistant roller which is used as a roller way of a steel rolling conveyer. The utility model is characterized in that the roller is assembled into the integration by a casing and an inner sleeve of the roller, wherein the central position of the inner sleeve is processed with a shaft hole which is connected with a transmission shaft and is embedded into a hole cavity at one end of the roller casing by adopting a hot loading method. The roller casing can be cast in a centrifugal mode, processed and made of wearing-resistant high-chromium cast iron, and the inner sleeve is formed by processing the common cast iron. By adopting the sheathing structure, the utility model can reduce the machine processing quantity of the roller and can reduce the material cost of the roller on the basis that the wear resistance of the roller is ensured.