The invention relates to a transformer station surge interference signal identification method and device. The identification method comprises steps that real-time transformer station network messagedata is acquired; according to wave data of the transformer station network message data in a previous week, wave data in a present week and wave data in a next week, four sampling point data Xk-1, Xk, Xk-N and Xk+N are sequentially acquired, if |[Xk-(Xk-1)]| and |[Xk-(Xk-N)]| respectively satisfy a preset threshold, or if|[Xk-(Xk-1)]| and |[Xk-(Xk+N)]| respectively satisfy the preset threshold, ak point of the wave in the present week is determined to generate surge interference. The method is advantaged in that through determining whether the sampling point data of the wave data of the transformer station network message data in the previous week, the wave data in the present week and the wave data in the next week satisfy set conditions, surge interference signals of voltage waveform or current waveform can be accurately identified, and reliable basis is provided for subsequently filtering the surge interference signals and avoiding fault recording error start of a fault recordingdevice caused by the surge interference signals.