Abstract: Supercritical carbon dioxide（S-CO₂） Brayton cycle has potential applications in the new gas turbine, the fourth generation nuclear power station, thermal power station and concentrated solar power station because of its unique advantages. This paper reviews the current works about corrosion behavior of materials in S-CO₂ Brayton cycle system, the effects of supercritical parameters（temperature and pressure） on corrosion rate of alloys. The effects of doped gas on the corrosion behavior and mechanism, such as steams, S-containing gas and air, were also reviewed. Furthermore, the deficiency of current research and future research expansion were pointed out for interests.