Abstract: The supercritical carbon dioxide cycle system provides a new way for the development of clean energy. But high temperature poses challenges to the oxidation resistance and strength of materials, including the ability to resist creep deformation and maintain mechanical strength. When the temperature is too high, the structural material must behave better in terms of oxidation resistance and structural integrity. The combined action of corrosion and carburizing in supercritical CO₂ environment can form carbides in heat-resistant steel. Therefore, it is very important to determine the maximum long-term service temperature of materials in supercritical CO₂ environment, as well as the combined effects of corrosion and carburizing on the mechanical properties of candidate materials. This paper summarizes the research status of the influence of supercritical carbon dioxide corrosion on the mechanical properties of heat resistant steel and nickel-base alloy. The influence mechanism of carburizing on crack growth and crack propagation is analyzed, and the shortcomings of current experiment and analysis are pointed out.