MCrAlY coatings prepared by conventional methods have polycrystalline structure, micropores and cracks. The high-temperature oxidation resistance of MCrAlY coatings needs to be improved. Many measurements have been put forward by domestic and foreign researchers to improve their high-temperature oxidation resistance. These methods are reviewed and the related problems are also analyzed. Moreover, the method on cryomilling inducing the columnar growth of MCrAlY coatings by laser-induction hybrid cladding (LIHRC) is put forward. NiCr powder (or NiCr powder, Co powder), Al powder and Y₂O₃ powder are treated by mechanical alloying in high-energy milling apparatus to obtain the cladding powder consisting of γ-Ni/γ′-Ni₃Al with large amounts of internal defects. The cryomilled MCrAlY powder presents the polygonal morphology. Preheating the substrate by induction heater is combined with laser cladding simultaneously. This method can not only obtain the crack-free MCrAlY coatings, but also induce the columnar growth in MCrAlY coatings. The high-temperature oxidation resistance of MCrAlY coating is improved significantly.