The invention discloses a relay protection device data collection authority management method based on semantics abstraction expression. Intermediate agent equipment separates a power system station level device and a spacing layer automatic device, after an intermediate agent conducts a safety audit, a corresponding operation request is forwarded to the station level device, the method can be quite easily combined with the safety authority requirement of a power system by citing physical equipment and attribute values according to different occasions, and operation and maintenance personnel can easily control and operate the authority; meanwhile, the mode of adopting message interaction is adopted in a traditional power protocol, text interaction is adopted, the validation and audit are facilitated, and retrieval and inquiry can be conveniently conducted according to semantics.