Objective In order to study the oxidation resistance of ZrO₂-Y₂O₃and A1₂O₃-TiO₂coatings, ZrO₂-Y₂O₃and A1₂O₃-TiO₂coatings with NiCrAl bonding layer were successfully prepared by plasma spraying process. Methods The microstructures, element types and levels and micro-hardness of the different coatings were studied by metallurgical microscopy, scanning electron microscopy ( SEM) , energy dispersive spectrometer ( EDS) and micro-hardness measurement. Oxidation resistance of all the specimens were tested under the same conditions. Results Both ZrO₂-Y₂O₃and A1₂O₃-TiO₂coatings had a significant layer structure, good adhesion and low porosity. The micro-hardness of ZrO₂-Y₂O₃and A1₂O₃-TiO₂coatings was 423HV and 628HV, respectively. Both ZrO₂-Y₂O₃and A1₂O₃-TiO₂coatings had certain oxidation resistance. NiCrAl bonding layer was the weakest part of the whole coatings. Conclusion ZrO₂-Y₂O₃coatings had better oxidation resistance than A1₂O₃-TiO₂coatings.