In order to improve the imaging performance of pulsed laser radar and reduce the impact of clutter on radar imaging,this paper presents a composite algorithm that combines constant fraction discrimination(CFD)and wavelet transform algorithms.Through the simulation model composed of laser pulse emission,clutter interference,laser pulse reception and target image generation,the laser radar image is generated by the CFD algorithm,wavelet transform algorithm,CFD and wavelet transform composite algorithm.At the same time,in order to further improve the performance of the new composite algorithm,a wavelet transform algorithm based on a new threshold function and CFD are combined to generate a laser radar image.The simulation analysis results show that the mean square error of the radar image based on the compound algorithm of CFD and wavelet transform is 9.5508.The mean square error of the radar image based on the compound algorithm of CFD and improved wavelet transform is 7.9065.The mean square error is smaller than other algorithms,which proves that the new compound algorithm has better performance in clutter recognition.