The invention discloses a fault detection method, a fault detection device, a storage medium and a processor. The fault detection method comprises the steps of detecting whether an inrush current appears during charging, determining, when determining that the inrush current appears during charging, the appearance cause of the inrush current based on the content of communication messages during charging in a predetermined time period which is a time period from a preset time before the moment when the inrush current appears to the preset time after the moment when the inrush current appears, and determining fault information, which comprises at least one of a fault type, a fault position and a fault occurrence time, of charging equipment based on the cause. The fault detection method, the fault detection device, the storage medium and the processor solve the technical problem that in the case of a charging fault, a vehicle pile in the related art relies on manual judgment and analysis resulting in poor accuracy and low efficiency.