The supercritical carbon dioxide(S-CO_2) cycle power generation technology has become an epochmaking and revolutionary frontier technology in the field of thermal power generation because of its own technical advantages. Due to the very harsh working environment

S-CO_2 is easy to cause corrosion problems of equipment materials. In order to ensure the safe and effective operation of S-CO_2 system

the range of working medium parameters and candidate materials of the system's key equipment are introduced. The current research status of corrosion behavior of metal materials in S-CO_2 environment are then reviewed. The corrosion mechanism in S-CO_2carbon environment is elaborated in detail. The influences of temperature

pressure

impurities

flow rate and material composition on S-CO_2 corrosion process are summarized. Meanwhile

the research progress of S-CO_2corrosion prevention and control technology is introduced. Finally

the shortcomings of existing research and the main direction of future research wereare summarized

so as to provide scientific basis for the safe operation of S-CO_2 recycling system in China.