The invention provides a suspicious signal actual frequency point alignment method and device, and the method comprises the steps: setting a target frequency band, carrying out the panoramic scanningof the target frequency band, and determining a suspicious signal appearing in the target frequency band; determining a central frequency point corresponding to the suspicious signal; and calculatingan actual frequency point corresponding to the suspicious signal according to the central frequency point. Based on the technical scheme provided by the invention, the actual frequency point of the suspicious signal can be quickly and accurately found, and then analysis is carried out to confirm the source of the suspicious signal.