Abstract: In order to utilize micro-motion characteristic of scatterers for radar target recognition, a detection and measurement algorithm to multiple scatterers with micro-motion is presented. Micro-Doppler has been derived which is induced by typical micro-motions. Then detection and measurement principle to target with micro-motion based on inverse Radon transform was given. To be applicable to large dynamic range, included with the clean technique, a detection and measurement algorithm to multiple scatterers with micro-motion was proposed and the corresponding process flow diagram was also given. Quantitative simulation results show the effectiveness of the proposed algorithm.