Abstract: In the detection and tracking of low-altitude, slow and small (LSS) targets, the effect of tracking may be influenced by the slow weather interference tracks. For narrow-band radar, the target classification accuracy based on the signal characters extracted from the target echoes is too low to suppress the phenomenon of weather interferences. In this paper, the method based on multi-features combination is proposed for the weather interference suppression. During the tacking of targets, the echo characters (RCS, shapes of echo) and track features (weather track point rate, velocity, Doppler direction, etc.) are combined to identify and suppress the weather tracks, meanwhile, the detection and tracking of true LSS targets is not influenced. The results of flight-test experiments prove the validity of the proposed weather interference suppression method.