The invention relates to a relay protection equipment state evaluation method. According to the method, the relay protection equipment information is transmitted to a protection fault information main station system, relay protection normal operation data examination standard values including a measurement variable and a state variable are set in the protection fault information main station system, non-normal protection operation conditions are identified on the basis of the real-time operation information of the protection equipment, the large-volume secondary equipment redundancy measurement information collected by the protection fault information main station system is utilized to carry out same source data check on a measurement variable and a state variable of a secondary loop to discover hidden faults of the secondary loop and a corresponding secondary equipment assembly, the protection equipment self-diagnosis technology is utilized to analyze the self-check alarm information of a relay protection component collected by the protection fault information main station system to determine a specific cause of a relay protection alarm, in combination with the real-time operation information and the historical data, comprehensive and integrated evaluation on a relay protection state is realized.