Pulse jamming as a common jamming mode, often affects the normal positioning of satellite navigation receiving equipment. In order to detect and suppress intentional or accidental pulse interference signals, a simple method of pulse interference identification and suppression is studied. The algorithm segments the signal within the statistical time, counts the maximum value and the minimum value of the maximum value of each segment of signal, looks for the initial threshold, and then statistics the adaptive pulse interference detection threshold. Sampling signals larger than the threshold are zeroed and normal reception of signals smaller than the threshold, achieve the purpose of pulse interference suppression. Finally, the effectiveness of the algorithm is verified by hardware test.