The invention relates to a nuclear power station electronic soft key system, comprising an authorization module, a processing module and a plurality of operating modules, wherein, an electronic soft key is provided with each operating module; the authorization module is used for collecting key instructions which are authorized to input; the processing module is used for processing the key instructions to control the electronic soft key to carry out unlocking and locking to corresponding operating modules. The electronic soft key is arranged on the operating module in the nuclear power stationelectronic soft key system, the electronic operating permission management is realized, supervision and authorization of controlling of nuclear danger and important control equipment are greatly increased, and reliability of operation of a nuclear power station is increased, the defense in depth principle of the nuclear power station is fully demonstrated, the method of carrying out operations after operations are authorized by a safety executing mechanism is adopted, the possibility of faulty operation is reduced to the maximum extent, and the possibility of accident which is caused by humanfactors is reduced, thereby greatly increasing the reliability of operation of the nuclear power station and ensuring the safety and stable operation of a power plant.