A method for processing recording file of multiple-plug-in component embedded type relay protection fault information system substation (embedded type station) provided by the invention is applied to the electric network relay protection fault information management system, comprises the following contents: the embedded type substation is of multiple-plug-in component structure; each plug-in component can independently operate an access or rolling-out type communication regular; each plug-in component can share data by one main CPU plug-in component; each plug-in component can be communicatedby Ethernet,; the access plug-in component can collect recording wave and tidy the data as a recording file with standard COMTRADE format, meanwhile, can manage the plug-in component recording file and list; the access plug-in component can notify the information generated by the recording file to a main CPU plug-in component; the main CPU plug-in component can acquire recording file from each access plug-in component and save the recording file to the present plug-in component, and can manage the recording file and list; the main CPU plug-in component takes charges of notifying the information generated by the recording file to the rolling-out plug-in component; the rolling-out plug-in component can acquire the recording file from the main CPU plug-in component according to the requirement of the main station, and can convey the recording file to the main station.