The invention discloses an anti-interference method. The anti-interference method particularly comprises the following steps: conducting frequency domain anti-interference processing to processed signals and then conducting space domain anti-interference processing to the processed signals. The frequency domain anti-interference processing is capable of restraining strong narrow-band interference. After the space domain anti-interference processing is conducted, broadband interference signals entering a receiver can be filtered. According to cascading frequency domain anti-interference and the space domain anti-interference, labor division of the frequency domain anti-interference and the space domain anti-interference are enabled to be clear, frequency domain trapped wave anti-interference is mainly used for restraining of narrow band interference, the number of interference entering the space domain anti-interference is reduced, the space domain anti-interference is enabled to be provided with more freedom degree to restrain the narrow band interference, and a good interference restraining effect is achieved.