Abstract: According to the conditions of the noncorrelation of the target return signal and the correlation of the jam signal between two stations, the dual station cancellation model of mainlobe jamming is given. Based on the method of the adaptive filter in signal processing, the dual station cancellation algorithm of mainlobe jamming is presented. The performance of the jamming suppression and the loss of the signal-noise-ratio are analyzed and simulated, and then the corresponding experiment system is built and the verification is carried out. Simulation and experiment results show that when the target angle between the two stations is larger than the correlation angle of the target, and when the interference-to-noise ratio is greater than 30 dB, the ratio of signal to the interference and noise is improved more than 25 dB.