Data fine processing method and system of relay protection device

The embodiment of the present invention discloses a data fine processing method and system for a relay protection device. The method comprises a database establishing step for establishing a device database for storing information of all sold relay protection devices, establishing a plug-in database for storing plug-in information and establishing a software database for storing software information, wherein each relay protection device stored in the device database stores is provided with an identity identification code indicating uniqueness, a repair interface establishing step of receivingrepair information sent by a user through scanning an identity identification code label posted on a failed device, wherein the repair information at least comprises plug-in fault information, protection action information and user contact information, a data updating step for storing the fault information to a corresponding equipment entry after receiving the repair information and automaticallyupdating the plug-in infor