Three kinds of coating were prepared by powder feeding type laser cladding using powders consist of self-smelting Co-base alloy with without WC, and self- smelting Ni-base alloy plus WC. Microstructure and hardness at different temperatures of the samples were studied experimentally. The results show that the three samples differ significantly in structure and property under the same laser processing parameters. For the Ni-type alloy, its hardness decreases markedly at 700℃ with an obvious structural changes while for the Co-type alloys, the occurrence of changes starts only at 700℃ .and the extent of the changes with temperatures are smaller. Also, it has been proved that no prodigious change in the hardness of WC can be observed with the rise of temperature. These conclusions provide important reference for the designing of ami- adhesive wear parts.