In this paper an automated procedure has been developed that makes use of the median radial velocity, SPIN and the vertical extent of reflectivity to remove anomalous propagation ground returns. During the trial of B08FDP in 2007, the algorithm has been applied in the “Grapes-Swift”. It removes most of AP clutters detected by Tianjin radar, and appears to work well in situation where AP clutters are embedded within precipitation echoes. Moreover, one hour quantitative precipitation forecast is improved by using the algorithm.