Abstract: Radar angel echo is usually caused by some special weather conditions, which will lead to multiple slow-moving “target” tracks on radar terminal, affecting radar performance and disturbing operator’s judgment. In this paper, based on acquisition and analysis of original radar signal containing angel echo, the characteristic differences between angel echo and real target are extracted, and by summarizing amplitude characteristics, Doppler characteristics, spatial distribution and motion law of angel echo, a multi-criteria decision-making clutter suppression method based on analytic hierarchy process (AHP) is proposed. The processing results of real experimental data show that radar angel echo can be accurately distinguished and well suppressed by adopting the method.