This paper summarizes the results and discussion of previous work by the authors on CaZrO3/ZrO2 eutectic coatings prepared by a laser irradiation method. The solidified films prepared by laser irradiation without preheating formed columnar macrostructures; three typical columnar macrostructures were formed. The differences in the macrostructures are closely related to the temperature gradient of the liquid phase during the solidification process. On the other hand, when the solidified film was prepared while the sample was heated in an electric furnace at 1300 ℃, formation of macro cracks was suppressed and a fine lamellar microstructure was formed. The lamella spacing of the eutectic film surface prepared at 1300 ℃ was 0.5 μm, which was estimated to correspond to a solidification rate of approximately 100 mm/h. When the solidification process was performed at 1300 ℃, where ionic diffusion of the oxide rapidly increases, the degree of undercooling of the melt becomes small, which suppresses the formation of columnar structure and reduces tensile stress in the film after solidification, resulting in an excellent eutectic solidification film without macrocracks.