<p>This study investigates the high-temperature mechanical properties of FeCrAl ferritic stainless steels with Y and Zr, and the oxidation behavior of the steels at 1000℃ in both air and water vapor environments. X-ray diffraction was employed to identify the types of oxides formed on the surfaces of the oxidized materials. The surface and cross-sectional morphologies as well as the chemical compositions of the oxide scales were analyzed using field-emission scanning electron microscopy and energy-dispersive spectroscopy. The results demonstrate that the addition of Y and Zr to FeCrAl refines the grain structure, resulting in a fine-grained and uniformly sized ferritic matrix, thereby enhancing the mechanical properties of the material. During high-temperature oxidation, Y-containing or Y-Zr composite oxide particles are formed in the oxide scale and distributed among the oxide grains of the scale, which improves the compactness of the oxide scale and the tightness of the bonding between the matrix and the oxide scale. However, the presence of water vapor catalyzes the oxidation reaction, accelerating the formation and growth of oxide products on the matrix surface. This reduces the compactness of the oxide scale to a certain extent and leads to an accelerated oxidation mass gain of FeCrAl. In conclusion, the addition of Y and Zr to FeCrAl can significantly improve the comprehensive mechanical properties and high-temperature oxidation resistance of FeCrAl, and the effect of composite addition of Y and Zr is superior to that of single addition of Y.</p>